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By Mathematics Mcqs Pipes and Cisterns No Comments

Pipes A and B can fill a cistern in 8 and 24 minutes respectively. They are opened an alternate minutes. Find how many minutes, the cistern shall be full?

A. 6 min
B. 12 min
C. 19 min
D. 10 min

Explanation:

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1/8 + 1/24 = 1/6

6 * 2 = 12

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