two pipes a and b can separately fill a tank in 16 and 10 minutes respectively . a third pipe c can drain off 60 liters of water per minute . if all the pipes are opened , the tank can be filled in 10 minutes . what is the capacity of the tank ?
"1 / 16 + 1 / 10 - 1 / x = 1 / 10 x = 12 16 * 60 = 960 answer : b"
multiply(multiply(inverse(subtract(add(add(divide(const_1, 16), divide(const_1, 10)), divide(const_1, 60)), divide(const_1, 10))), const_3), 10)