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Reported Question / Answer
Q.) Two pipes A and B can fill a cistern in 37 1/2 minutes and 45 minutes respectively. Both pipes are opened. The cistern will be filled in just half an hour, if the B is turned off after:
1)
9 min.
2)
5 min.
3)
15 min.
4)
10 min.
5)
NULL
Answer :
1
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