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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 | |