A large pipe can fill a pool in 9hrs if a large and a small pipe can fill this pool in 6 hrs when used togheter how long would it take the smaller pipe to fill the pool alone?

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1174773

2026-04-11 09:45

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large fills 1/9 per hour, large and small fill 1/6 per hour so small fills 1/6 - 1/9 per hour, ie 1/18, so small alone would take 18 hours.

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