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Pipes & Cisterns Flashcards
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Formula
Two fill + one empty = ?
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Answer
Time = (A×B×C) / [(-A×B) + (B×C) + (A×C)] — assign negative to outlet.
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Formula
If a pipe fills in x hours, per hour work = 1/x...?
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Answer
If a pipe fills in x hours, per hour work = 1/x. Add all per hour works to get combined rate.
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Formula
Leak problem = ?
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Answer
If a pipe fills in A hours and a leak empties in B hours, net time = (A×B)/(B-A).
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