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Pipe A can fill an empty tank in 30 hour...

Pipe A can fill an empty tank in 30 hours while B can fill it in 45 hours. Pipe A and B are opened and closed alternatively i. e., first pipe A is opened, then B, again A and then B and so on for 1 hour each time without any time lapse. In how many hours the tank will be filled when it was empty, initially?

A

36

B

54

C

48

D

60

Text Solution

Verified by Experts

The correct Answer is:
A
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