Magcoop House

Jennie can clean the house in 3 hours while Ruby can clean the house in 6 hours. If they are working together, how many hours they will clean the house?

Daftar Isi

1. Jennie can clean the house in 3 hours while Ruby can clean the house in 6 hours. If they are working together, how many hours they will clean the house?

Answer:

2 hours

Step-by-step explanation:

3 hours ÷ 6 hours = 2 hours

#Carryonlearning

Answer:

6hrs po sagot jan correct me if i wrong

2. It takes 1.5 hours to John to clean the house. Linda can clean the same house in 2 hours. How many hours will they clean the house if they work together?

2/3x + 1/2x = 6
4x + 3x = 6
7x = 6
7x/7 = 6/7
6/7 hours or less than one hour

3. Brian, Mark, and Jeff are painting a house. Working together they can paint the house in 6 hours. Working alone, Brian can paint the house in 15 hours, and Jeff can paint the house in 20 hours. How long would it take Mark to paint the house alone?a.6hours b.8 hoursc. 7 hoursd.4 hours solve ¿

Answer:

6 hours

Step-by-step explanation:

hope makatutulong po ito

4. It took Laura 2 hours to ride toAdam's house at 4 miles perhour. How far is it betweenLaura and Adam's house? *

Answer:

8 miles

Step-by-step explanation:

DST SOLUTION:

To find the distance

D=S×T

D=4×2

8=4×2

sana po makatulong

#CarryOnLearning

5. June can paint a house in 10 hours july can paint a house in 14 hours. How long will it take to paint the house if they work together

Answer:

4 hours

Step-by-step explanation:

Get the expanded

10 = 14

10 = 10 = 4

10 = 4

Asnwer=4

6. Thea and Issa are asked to paint a house. Thea can paint the house by himself in 10 hours and Issa can paint the house by herself in 14 hours. How long would it take to paint the house if they worked together?

Answer:

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deleted after 1 hour.Tap on a clip to paste it

7. B. -422/3,4 - 110 11. Brian, Mark, and Jeff are painting a house. Working together they can paint the house is 6 hours, Working alone Brain can paint the house in 15 hours and Jeff can paint the house in 20 houts. How long would it take Mark to paint the house working alone? A. 6 hours B. 8 hours C. 7 hours D. 4 hours foother fpecie thinks that if he works

Answer:

hi hello I don't knowUse the edit icon to pin, add or delete clips.Touch and hold a clip to pin it. Unpinned clips will be deleted after 1 hour.Tap on a clip to paste it

8. it takes johnny 6 hours to paint a house and maria takes 5 hours to paint the same size house how long will it take them to paint one house of the same size togethera. 2.70 hours b. 2.71 hours c. 2.72 hours d. 2.73 hours pa help po

Answer:

yan kasi answer q at kakacheck lang namin

Step-by-step explanation:

hope it's help

9. Danny can paint a house in 15 hours Carina can paint a house in 30 hours how long will it take to mork together

Answer:

2 hours is the answer pls brainliest i need it

10. 1. If it takes 20 hours to paint a room, what part of work is completed after 15 hours? 2. If a carpenter can roof a house in 12 hours and his assistant can roof a house in 60 hours, how many hours will it take them to roof the house working together?

Answer:

The solution is Cosmo takes 30 days to build and Joey takes 20 days. Clark can complete a job in one hour less than his apprentice.

Step-by-step explanation:

u hope it helps

11. Patrick can paint a house by himself in t+4 hours. Karen can paint the same house by herself in t+9 hours. If they work together, they can paint the house in t hours. How much time will it take for Patrick to paint the house by himself?

Answer:

It will take 10 hours for Patrick to paint the house alone.

Step-by-step explanation:

Given:

The job of painting the house (same) : 1

Patrick's time to finish the job: (t+4)Patrick's work rate: 1/(t+4)

Karen's time to finish the job: (t+9)Karen's work rate: 1(t+9)

Time to finish the painting job if working together: tWork rate when working together: 1/t

Equation: Add the work rate of Patrick and Karen:

1/(t+4) + 1/(t+9) = 1/t

LCD (least common denominator): (t+4)(t+9)(t)

Multiply each term by their LCD:

[1/(t+4)] (t+4)(t+9)(t) + [1/(t+9)](t+4)(t+9)(t) = (1/t)(t+4)(t+9)(t)

(t² + 9t) + (t² + 4t) = t² + 13t + 36

Move the equation the left side and equate to 0. Apply Additive Inverse Property:

t² + t² - t² + 9t + 4t - 13t - 36 = 0

2t² - t² + 13t - 13t - 36 = 0

t² - 36 = 0

Factor the difference of two squares product, t² - 36=0.

The factors are sum and difference of two terms.

(t + 6) (t - 6) = 0

t + 6 = 0

t = -6

t - 6 = 0

t = 6

Choose the positive value for time, t = 6 hours.

Substitiute:

Patrick's time to finish the painting job: t+4 = (6) + 4 = 10 hoursKaren's time to finish the same job: t+9 = (6) + 9 = 15 hoursTime to finish the job if they work together: t = 6 hours

It will take 10 hours for Patrick to paint the house alone.

Work rate is an inverse proportion, the more people working on a job, the fewer hours it will be completed. Fewer people working on the job, the more hours it will be completed.

Check:

(Patrick's work rate) + (Karen's work rate) = (Working together rate)

(1/10) + (1/15) = 1/6

LCD: 30

3/30 + 2/30 = 5/30

5/30 = 5/30

1/6 = 1/6 (True)

#CarryOnLearning

12. 5. Walter and Helen are asked to paint a house. Walter can paint the house by himself in12 hours and Helen can put the house by herself in 16 hours. How long would ittake to paint the house if they work together?

Answer:

28 hours

Step-by-step explanation:

OK how I do I just pluss

12+16=28

13. Brian, Mark, and Jeff are painting a house. Working together they can paint the house in 6 hours. Working alone, Brian can paint the house in 15 hours, and Jeff can paint the house in 20 hours. How long would it take Mark to paint the house alone?

1/R = 1/r1 + 1/r2 + 1/r3

1/6 = 1/15 + 1/20 + 1/r3

1/6-(1/15 +1/20) = 1/r3

[10 -(4 +3)]/60 =1/r3

3/60 = 1/r3

r3 = 60/3

= 20 hrs

Mark will take 20 hrs to paint the house alone

14. If a carpenter can roof a house in 24 hours and his assistant can roof a house in 72 hours, how many hours will it take them to roof the house working together?

Answer:

They will complete it in 52 hours

Step-by-step explanation:

72-24=52

15. your sister can't clean the house for 12 hours if both of you clean the house it will only take 5 hours and 48 minutes how about you how many hours will take clean the house who is faster in the cleaning the house

Answer:

Your sister clean the house in 12 hours

16. it took shawn 6 hours to walk to susans house at 2 kilometers per hour. how far is it bewteen shawns house and susans house

Hello!

It took shawn 6 hours to walk to susans house at 2 kilometers per hour. how far is it bewteen shawns house and susans house

We have the following data:

ΔV (Average Speed) = 2 km/hr

ΔS (distance) = ? (in km)

ΔT (time) = 6 hours

Applying the data to the formula:

[tex]\Delta{V} = \dfrac{\Delta{S}}{\Delta{T}}[/tex]

[tex]\Delta{S} = \Delta{V}*\Delta{T}[/tex]

[tex]\Delta{S} = 2\:\frac{km}{\diagup\!\!\!\!\!hr}*6\:\diagup\!\!\!\!\!hr[/tex]

[tex]\boxed{\boxed{\Delta{S} = 12\:km}}\Longleftarrow(distance)\end{array}}\qquad\checkmark[/tex]

Answer:

The distance between Shawn's house and Susan's home is 12 km

_______________________________

I Hope this helps, greetings ... Dexteright02! =)

17. it took ronald 6 hours to walk to nilo's house at 2 kilometers per hour how far is it between nilo's house

Question :-

It took Ronald 6 hours to walk to Nilo's house at 2 kilometers per hour, how far is Nilo's house?

Answer :-

Nilo's house is 12 kilometers far.

[tex] \blue{ \overline{ \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad}}[/tex]

Solution :-

As per the provided information in the given question, we have been given that the speed is 2 km/h. The time is 6 hours. We have been asked to find or calculate the distance.

To calculate the distance, we will use the formula below :-

[tex]\qquad\quad\bigstar \: \: \boxed{\sf{ \: \: \: Distance = Speed \times Time \: \: \:}}[/tex]

Substitute the given values into the above formula and solve for Distance :-

[tex]\sf:\implies{Distance = Speed \times Time }[/tex]

[tex]\sf:\implies{Distance = 2 \: km/h \times 6 \: hours }[/tex]

[tex]\sf:\implies\bold{Distance = 12 \: km}[/tex]

Therefore :-

Nilo's house is 12 kilometers far.

[tex] \\ [/tex]

Learn more about how to calculate the distance at https://brainly.ph/question/26253250

18. 10. Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB 8 hoursC.10 hoursD. 12 hours

Answer:

D. 12 Hours

Step-by-step explanation:

[tex] \\ \sf{} \frac{3}{x} + \frac{3}{x + 8} = 1[/tex]

LCD is x(x + 8). Multiply all the terms by the LCD.

[tex] \\ \sf{}x(x + 8) \bigg ( \frac{3}{x} + \frac{3}{x + 8} = 1 \bigg)[/tex]

[tex] \\ \sf{} \frac{3 \big(x(x + 8) \big)}{x} + \frac{3 \big(x (x + 8) \big)}{x + 8} = x(x + 8)[/tex]

[tex] \\ \sf{}3(x + 8) + 3x = x(x + 8)[/tex]

[tex] \\ \sf{}3x + 24 + 3x = {x}^{2} + 8x[/tex]

[tex] \\ \sf{}6x + 24 = {x}^{2} + 8x[/tex]

[tex] \\ \sf{}6x + 24- {x}^{2} - 8x = 0[/tex]

[tex] \\ \sf{} - 2x + 24 - {x}^{2} = 0[/tex]

[tex] \\ \sf{} {x}^{2} + 2x - 24= 0[/tex]

[tex] \\ \sf{}(x - 4)(x + 6) = 0[/tex]

[tex] \\ \sf{}x - 4 = 0 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x + 6 = 0[/tex]

[tex] \\ \sf{}x = 4 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = - 6 \\ \\ [/tex]

X = 4, - 6

Since, time cannot be counted as negative, let's eliminate - 6. Thus,

Sarah can clean the house in 4 Hours.

For Vicky:

= X + 8

= 4 + 8

= 12

Vicky can clean the house in 12 Hours.

#CarryOnLearning

Stay safe and God bless you!

19. 10. Suppose one painter can paint the entire house in twelve hours, and the second paintertakes eight hours to paint a similarly-sized house. How long would it take the two painterstogether to paint the house?A. 3.9 HoursB. 4.0 HoursC.4.4 Hours0.4.8 Hours

Answer:

D. 4.8 Hours

Step-by-step explanation:

[tex] \\ \sf{} \frac{x}{12} + \frac{x}{8} = 1[/tex]

LCD is 24. Multiply all the terms by the LCD.

[tex] \\ \sf{}24 \bigg( \frac{x}{12} + \frac{x}{8} = 1\bigg)[/tex]

[tex] \\ \sf{} \frac{24x}{12} + \frac{24x}{8} = 24[/tex]

[tex] \\ \sf{}2x + 3x = 24[/tex]

[tex] \\ \sf{}5x = 24[/tex]

[tex] \\ \sf{}x = \frac{24}{5} [/tex]

[tex] \\ \huge \boxed{ \sf{}x = 4.8} \\ \\ \\ \\ \\ [/tex]

#CarryOnLearning

Stay safe and God bless you!

20. An electrician charges ₱525.00 per hour for his services. He worked for 2.5 hours in House A and 4.75 hours in House B. How much is his service charge in both houses?

Answer:

1,312.5 in House A, 2,493.75 in House B

21. if ben can paint a house in 3 hours and gian can paint the same house in 6 hours

Answer:

what is the question?

question

Answer:

Ty for Fréé Póints

Explanation:

#CarryOnLearning

22. If nonoy can scrub a house in 4 hours, and nene can scrub the same house in 6 hours, how long will it take for both of them to scrub the house together?

Answer:

nasa picture ang sagot

sana makatulong

Step-by-step explanation:

yan

23. 3.your sister can clean the house for 12 hours. If both of youclean the house, it will only take 5 hours and 48 minutes. Howabout you? How many hours will it take you to clean thehouse? Who is faster in cleaning the house?

Answer:

11.26 hours or 11 hours and 16 minutes

me is faster than my sister.

Step-by-step explanation:

The formula in solving Work Problem is;

1/tₜ = 1/t₁ + 1/t₂

where: tₜ = time taken if both entities work

together

t₁ = time taken by first entity

t₂ = time taken by second entity

Given:

t₁ = 12 hours

tₜ = 5 hours and 48 minutes

Required:

t₂ =?

and which is faster t₁ or t₂ ?

Solution:

1/tₜ = 1/t₁ + 1/t₂

note that: 48 minutes is O.8 hours

so,

1/5.8 = 1/12 + 1/t₂

1/t₂ = 1/5.8 - 1/12

1/t₂ = 12/(5.8×12) - 5.8/(5.8×12)

1/t₂ = 6.2/(5.8×12)

(6.2)t₂ = 5.8×12

(6.2)t₂ = 69.6

t₂ = 69.6/6.2

t₂ = 11.26 hours or 11 hours and 16 minutes

therefore; me is faster than my sister.

#PRAYALWAYS

24. 10 Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB. 8 hoursC. 10 hoursD 12 hours

Answer:

D. 12 Hours

Step-by-step explanation:

[tex] \\ \sf{} \frac{3}{x} + \frac{3}{x + 8} = 1[/tex]

LCD is x(x + 8). Multiply all the terms by the LCD.

[tex] \\ \sf{}x(x + 8) \bigg ( \frac{3}{x} + \frac{3}{x + 8} = 1 \bigg)[/tex]

[tex] \\ \sf{} \frac{3 \big(x(x + 8) \big)}{x} + \frac{3 \big(x (x + 8) \big)}{x + 8} = x(x + 8)[/tex]

[tex] \\ \sf{}3(x + 8) + 3x = x(x + 8)[/tex]

[tex] \\ \sf{}3x + 24 + 3x = {x}^{2} + 8x[/tex]

[tex] \\ \sf{}6x + 24 = {x}^{2} + 8x[/tex]

[tex] \\ \sf{}6x + 24- {x}^{2} - 8x = 0[/tex]

[tex] \\ \sf{} - 2x + 24 - {x}^{2} = 0[/tex]

[tex] \\ \sf{} {x}^{2} + 2x - 24= 0[/tex]

[tex] \\ \sf{}(x - 4)(x + 6) = 0[/tex]

[tex] \\ \sf{}x - 4 = 0 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x + 6 = 0[/tex]

[tex] \\ \sf{}x = 4 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = - 6 \\ \\ [/tex]

X = 4, - 6

Since, time cannot be counted as negative, let's eliminate - 6. Thus,

Sarah can clean the house in 4 Hours.

For Vicky:

= X + 8

= 4 + 8

= 12

Vicky can clean the house in 12 Hours.

#CarryOnLearning

Stay safe and God bless you!

25. this is our hour house

Answer:

Our

Explanation:

This is our house.

"our" refers to possession.

26. dan can paint a house in 15 hours catherinecan paint a house in 30 hours how long will it take them working together

Answer:

42hour and 2weeks at 1day

27. An electrician charges P525.25 per hour in its servecises. He worked for 2.5 hours in house a and 4.75 hpurs in House B. How much is the total charge in 2 house?

Answer:

525.25×2.5=1,313.125

525.25×4.75=2,494.9375

1313.125+2494.9375=3,808.0625 or P 3, 808.06

ANSWER: P 3, 808.06

Answer:

3806.9625

Step-by-step explanation:

525.323 x 2.5= 1312.125

525.25x 4.75= 2494.8375

1312.125 + 1494.8375= 3806.9625

28. 5. An electrician charges P 525.25 per hour for his services. He worked for2.5 hours in House A and 3 hours in House B. How much is the totalcharge in the two houses?

Answer:

210.1 or 25 po

Explanation:

sana makatulong po:)

29. If a carpenter can roof a house in 24 hours and his assistant can roof a house in 72 hours, how many hours will it take them to roof the house working together?

58 po Tama po Yan pa brainliest po pls

30. if piccolo can paint a house in 4 hours, and yamcha can paint the same house in 6 hour, how long will it take for both of them to paint the house together?

Answer:

10hr?o

Step-by-step explanation:

I add the 6+4=10

Tama po ba??

10h po sana makatulong

1. Jennie can clean the house in 3 hours while Ruby can clean the house in 6 hours. If they are working together, how many hours they will clean the house?​

2. It takes 1.5 hours to John to clean the house. Linda can clean the same house in 2 hours. How many hours will they clean the house if they work together?

4. It took Laura 2 hours to ride toAdam's house at 4 miles perhour. How far is it betweenLaura and Adam's house? *​

5. June can paint a house in 10 hours july can paint a house in 14 hours. How long will it take to paint the house if they work together​

6. Thea and Issa are asked to paint a house. Thea can paint the house by himself in 10 hours and Issa can paint the house by herself in 14 hours. How long would it take to paint the house if they worked together?​

8. it takes johnny 6 hours to paint a house and maria takes 5 hours to paint the same size house how long will it take them to paint one house of the same size togethera. 2.70 hours b. 2.71 hours c. 2.72 hours d. 2.73 hours pa help po ​

9. Danny can paint a house in 15 hours Carina can paint a house in 30 hours how long will it take to mork together​

10. 1. If it takes 20 hours to paint a room, what part of work is completed after 15 hours? 2. If a carpenter can roof a house in 12 hours and his assistant can roof a house in 60 hours, how many hours will it take them to roof the house working together?

11. Patrick can paint a house by himself in t+4 hours. Karen can paint the same house by herself in t+9 hours. If they work together, they can paint the house in t hours. How much time will it take for Patrick to paint the house by himself?

12. 5. Walter and Helen are asked to paint a house. Walter can paint the house by himself in12 hours and Helen can put the house by herself in 16 hours. How long would ittake to paint the house if they work together?​

13. Brian, Mark, and Jeff are painting a house. Working together they can paint the house in 6 hours. Working alone, Brian can paint the house in 15 hours, and Jeff can paint the house in 20 hours. How long would it take Mark to paint the house alone?

14. If a carpenter can roof a house in 24 hours and his assistant can roof a house in 72 hours, how many hours will it take them to roof the house working together?

15. your sister can't clean the house for 12 hours if both of you clean the house it will only take 5 hours and 48 minutes how about you how many hours will take clean the house who is faster in the cleaning the house ​

16. it took shawn 6 hours to walk to susans house at 2 kilometers per hour. how far is it bewteen shawns house and susans house

17. it took ronald 6 hours to walk to nilo's house at 2 kilometers per hour how far is it between nilo's house​

18. 10. Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB 8 hoursC.10 hoursD. 12 hours​

19. 10. Suppose one painter can paint the entire house in twelve hours, and the second paintertakes eight hours to paint a similarly-sized house. How long would it take the two painterstogether to paint the house?A. 3.9 HoursB. 4.0 HoursC.4.4 Hours0.4.8 Hours​

20. An electrician charges ₱525.00 per hour for his services. He worked for 2.5 hours in House A and 4.75 hours in House B. How much is his service charge in both houses?

21. if ben can paint a house in 3 hours and gian can paint the same house in 6 hours​

22. If nonoy can scrub a house in 4 hours, and nene can scrub the same house in 6 hours, how long will it take for both of them to scrub the house together? ​

23. 3.your sister can clean the house for 12 hours. If both of youclean the house, it will only take 5 hours and 48 minutes. Howabout you? How many hours will it take you to clean thehouse? Who is faster in cleaning the house?​

24. 10 Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB. 8 hoursC. 10 hoursD 12 hours​

25. this is our hour house​

26. dan can paint a house in 15 hours catherinecan paint a house in 30 hours how long will it take them working together

27. An electrician charges P525.25 per hour in its servecises. He worked for 2.5 hours in house a and 4.75 hpurs in House B. How much is the total charge in 2 house? ​

28. 5. An electrician charges P 525.25 per hour for his services. He worked for2.5 hours in House A and 3 hours in House B. How much is the totalcharge in the two houses?​

29. If a carpenter can roof a house in 24 hours and his assistant can roof a house in 72 hours, how many hours will it take them to roof the house working together?

30. if piccolo can paint a house in 4 hours, and yamcha can paint the same house in 6 hour, how long will it take for both of them to paint the house together?​

Video Terkait

1. Jennie can clean the house in 3 hours while Ruby can clean the house in 6 hours. If they are working together, how many hours they will clean the house?

4. It took Laura 2 hours to ride toAdam's house at 4 miles perhour. How far is it betweenLaura and Adam's house? *

5. June can paint a house in 10 hours july can paint a house in 14 hours. How long will it take to paint the house if they work together

6. Thea and Issa are asked to paint a house. Thea can paint the house by himself in 10 hours and Issa can paint the house by herself in 14 hours. How long would it take to paint the house if they worked together?

8. it takes johnny 6 hours to paint a house and maria takes 5 hours to paint the same size house how long will it take them to paint one house of the same size togethera. 2.70 hours b. 2.71 hours c. 2.72 hours d. 2.73 hours pa help po

9. Danny can paint a house in 15 hours Carina can paint a house in 30 hours how long will it take to mork together

12. 5. Walter and Helen are asked to paint a house. Walter can paint the house by himself in12 hours and Helen can put the house by herself in 16 hours. How long would ittake to paint the house if they work together?

15. your sister can't clean the house for 12 hours if both of you clean the house it will only take 5 hours and 48 minutes how about you how many hours will take clean the house who is faster in the cleaning the house

17. it took ronald 6 hours to walk to nilo's house at 2 kilometers per hour how far is it between nilo's house

18. 10. Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB 8 hoursC.10 hoursD. 12 hours

19. 10. Suppose one painter can paint the entire house in twelve hours, and the second paintertakes eight hours to paint a similarly-sized house. How long would it take the two painterstogether to paint the house?A. 3.9 HoursB. 4.0 HoursC.4.4 Hours0.4.8 Hours

21. if ben can paint a house in 3 hours and gian can paint the same house in 6 hours

22. If nonoy can scrub a house in 4 hours, and nene can scrub the same house in 6 hours, how long will it take for both of them to scrub the house together?

23. 3.your sister can clean the house for 12 hours. If both of youclean the house, it will only take 5 hours and 48 minutes. Howabout you? How many hours will it take you to clean thehouse? Who is faster in cleaning the house?

24. 10 Vicky and Sarah can clean the house in 3 hours if they work together. The time that Vicky takes incleaning the house alone is 8 hours more than the time Sarah takes cleaning the same house. How longdoes it take Vicky to clean the house alone?A 6 hoursB. 8 hoursC. 10 hoursD 12 hours

25. this is our hour house

27. An electrician charges P525.25 per hour in its servecises. He worked for 2.5 hours in house a and 4.75 hpurs in House B. How much is the total charge in 2 house?

28. 5. An electrician charges P 525.25 per hour for his services. He worked for2.5 hours in House A and 3 hours in House B. How much is the totalcharge in the two houses?

30. if piccolo can paint a house in 4 hours, and yamcha can paint the same house in 6 hour, how long will it take for both of them to paint the house together?