state gov Chhatisgarh (CG) Police Constable Mock Test 2023-24 Quantitative Aptitude Time and Work Pipe and Cistern
A tank 8 ft. × 5 ft × 3 ft. has a supply pipe pouring in 480 inch3 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?
1
9 hrs
2
8 hrs
3
7 hrs
4
6 hrs