1.

A pipe can fill the tank in 12 hours.Because of a leak in the tank it took 16(1/2) hours to fill the tank.If thetank is full,how much time will the leak take to empty it?

A. 18hrs51mins
B. 18hrs 20min
C. 18hrs 55min
D. 18hrs 40min
Answer» B. 18hrs 20min


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