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When three pipes fill a pool, they can finish in 12 hours. Two of the pipes can finish in 18 hours if they are working together...Asked by Anonymous
When three pipes fill a pool, they can finish in 12 hours. Two of the pipes can finish in 18 hours if they are working together. How long would it take a third pipe to fill the pool on its own?
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Answered by
Steve correction
consider the two pipes to be a single pipe that fills it in 18 hrs. So, now we have
1/18 + 1/x = 1/12
1/18 + 1/x = 1/12
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