Two pipes A and B can independently fill a tank completely in 20 and 3 – McqOptions

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1.	Two pipes A and B can independently fill a tank completely in 20 and 30 minutes respectively. If both the pipes are opened simultaneously, how much time will they take to fill the tank completely ?
A.	10 minutes
B.	12 minutes
C.	15 minutes
D.	25 minutes.
Answer» C. 15 minutes

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