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pipes and cisterns

GATE Civil Engineering · Time and Work - Pipes and Cisterns · 2019-2019

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Rosen — Discrete Mathematics and Its Applications

Discrete structures, counting, relations, graph theory

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2019 Q9

An oil tank can be filled by pipe X in 5 hours and pipe Y in 4 hours, each pump working on its own. When the oil tank is full and the drainage hole is open, the oil is drained in 2...

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