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| Q.8 | A tank 8 ft. x 5 ft. x 3 ft. has a supply pipe pouring in 480 in3 of water in a minute and an exhaust pipe emptying it in 4 hours. If the tank is full and both pipes are open, how many hours will it take to empty it? | |
| Ans | A. 9 hrs | |
| B. 6 hrs | ||
| C. 7 hrs | ||
| D. 8 hrs |
Correct Ans Provided: A
