(20 POINTS!!!!) Jack can paint an entire house in 3 hours. Jill can do the same job in 4 hours. What portion of the house can th

Question

mestny [16]

3 years ago

7

(20 POINTS!!!!) Jack can paint an entire house in 3 hours. Jill can do the same job in 4 hours. What portion of the house can th

ey paint in 1 hour if they work together?

Mathematics

2 answers:

Charra [1.4K] · Answer 1 · 2022-08-13T08:31:41+03:00

Charra [1.4K]3 years ago

6 0

7/12 portion of the house

Mariulka [41] · Answer 2 · 2022-08-13T07:07:12+03:00

Mariulka [41]3 years ago

5 0

Answer: 7/12 portion

Explanation:

Jack can paint:

1 house = 3hr
1/3 portion= 1hr

Jill can paint:

1 house = 4hr
1/4 portion = 1hr

Both of them together can paint in 1 hour:

1/3 + 1/4 = 3/12 + 4/12 = 7/12 portion in 1hr