Two pipes A and B can fill a tank in 20 hours and 24 hours respectivel – McqOptions

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1.	Two pipes A and B can fill a tank in 20 hours and 24 hours respectively. If the two pipes opened at 5 in the morning, then at what time the pipe A should be closed to completely fill the tank exactly at 5 in the evening?
A.	3 pm
B.	2 pm
C.	1 pm
D.	11 am
Answer» B. 2 pm

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