Question

Pipe X and Pipe Y can independently fill a tank in 18 minutes and 30 minutes, respectively. However, there is a leakage in the tank that causes water to flow out at a rate of 2 liters per minute. How long will it take to fill the tank if both pipes and the leakage operate simultaneously?

A 20 mins
B 15 mins
C 22 mins
D 18 mins
E None of these
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