Robert can paint a certain wall in 8 minutes, while it takes Jack 24 minutes to paint the same wall. How long will it take Robert and Jack to paint the wall working together?

Question

Mathematics

Rachel Marks

13 March, 01:43

Robert can paint a certain wall in 8 minutes, while it takes Jack 24 minutes to paint the same wall. How long will it take Robert and Jack to paint the wall working together?

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Answers (1)

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Deborah Harmon · Answer 1

6 minutes

You can get this by setting up the equation:

x/8 + x/24 = 1

Where x is equal to the amount of hours spent working. In this equation x/8 would be the first. In 8 hours he would paint on room. x/24 would be the second. When you add them together using common denominators, you can find x.