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It takes 7 hours for Will to paint a house. Judy can paint the same house in 3 hours. How long will it take them to paint the house if they work together?

It takes 7 hours for Will to paint a house. Judy can paint the same house in 3 hours. How long will it take them to paint the house if they work together?
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11 votes
It takes 7 hours for Will to paint a house. Judy can paint the same house in 3 hours. How long will it take them to paint the house if they work together?

User Vadim Nikolaev
by
8.1k points

1 Answer

11 votes

Answer:

2 hours

Explanation:

1/7 + 1/3 = 10/21

21/10= 2.1

User Juandesant
by
8.1k points
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