AAI ATC Junior Executive 25 Mar 2021 Shift 2 Paper

Question : 34 of 120

Marks: +1, -0

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?