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RRB Group D Pipes and Cisterns — practice questions

2 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.

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Pipe A fills an empty cistern in 69 hours and pipe B drains a full cistern in 46 hours. Starting from a full cTwo inlet pipes A and B can fill an empty cistern in 22 and 33 hours respectively. Both are opened together, b