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John, Paul and Peter can finish painting the fence in 2 hours. If John does the job alone he 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?

 Oct 17, 2020
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Step 1: Assign variables:

Let x = time taken by Peter

Step 2: Use the formula:

\(\frac{1}{5}+\frac{1}{6}+\frac{1}{x}=\frac{1}{2}\). Let's see if you can solve it from here. I know you can! wink

 
 Oct 17, 2020

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