An electric pump can fill a tank in 3 hours. Because of a leak in, the tank it took 3(1/2) hours to fill the tank. If the tank is full, how much time will the leak take to empty it?
A. 14 hours
B. 16 hours
C. 18 hours
D. 21 hours
Answer:D
An electric pump can fill a tank in 3 hours. Because of a leak in, the tank it took 3(1/2) hours to fill the tank. If the tank is full, how much time will the leak take to empty it?
A. 14 hours B. 16 hours C. 18 hours D. 21 hours
Explanation: Work done by the leak in 1 hour= (1/3)-(1/ (7/2))