Paul and Peter can finish painting the fence in 2 hours. If Jane does - ProProfs Discuss
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Paul and Peter can finish painting the fence in 2 hours. If Jane does the job alone she can finish it in 5 hours. If Paul does the job alone he can finish it in 6 hours. How long will it take for Peter to finish the job alone?

This question is part of Mathematical Problems.
Asked by Arbiebauya, Last updated: Mar 29, 2020

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2 Answers

John Adney

John Adney

Answered Mar 16, 2017

In two hour
jane will finish 2/5
paul will finish 2/6
peter will finish = 1-(2/5+2/6)
=1- (12/30+10/30)
=1-(22/30)
=8/30
=2/7.5
then he will finish it alone in 7.5 hours
 

John Smith

John Smith

Answered Mar 16, 2017

71/2
 

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