a pump can fill a tank with water in 2 hours . because of a leak , it took 2 2 / 3 hours to fill the tank . the leak can drain all the water of the tank in
"explanation : solution 1 the pump can fill the tank in 2 hour . but , because of the leak , it took 2 2 / 3 hours to fill the tank . i . e . , the additional water filled by the pump in 2 / 3 hour is emptied by the leak in 2 2 / 3 = 8 / 3 hours . therefore , the water filled by pump in 2 bour can be emptied by the leak in 8 / 3 x 3 = 8 hours . i . e . , the leak can drain all the water of the tank in 8 hours . answer is b"
inverse(subtract(divide(2, 2), inverse(divide(add(multiply(2, 3), 2), 3))))