It can take 12 hours to fill a swimming pool using two pipes. If the pipe of larger diameter is used for 4 hours and the pipe of smaller diameter for 9 hours, only half the pool can be filled. How long it would take for each pipe to fill the pool separately?

Asked by  | 14th May, 2012, 06:31: PM

Expert Answer:

Answered by  | 15th May, 2012, 09:45: AM

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