Question

Two pipes A and B can fill a tank in 5 hours and 20 hours respectively. Both pipes together can fill the same tank in:

Accepted Answer

A. Let the total capacity of the tank be $	ext{LCM}(5, 20) = 20$ units. - Rate of Pipe A = $\frac{20}{5} = 4$ units/hour - Rate of Pipe B = $\frac{20}{20} = 1$ unit/hour Combined rate of A and B = $4 + 1 = 5$ units/hour. Time required together = $\frac{20}{5} = 4$ hours.

Pipe A and B tank filling time

Explanation

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