Two pipes, A & B can fill a tank in 12 & 16 minutes respectively. Both – McqOptions

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1.	Two pipes, A & B can fill a tank in 12 & 16 minutes respectively. Both pipes are together, but 4 minutes before the tank is full, pipe A is closed. In how many minutes will the tank be full?A. 9 minutes 8 secondsB. 10 minutes 9 secondsC. 11 minutes 19 secondsD. 11 minutes 29 seconds
A.	C
B.	A
C.	B
D.	D
Answer» C. B

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