to a sugar solution of 10 liters containing 50 % sugar , 10 liter of water is added . the percentage of sugar in the new solution is ?
"quantity of sugar = 50 * 10 / 100 = 5 kg new percentage = 5 / 20 * 100 = 25 % answer is a"
multiply(divide(multiply(divide(50, const_100), 10), add(10, const_1)), const_100)