if y is 60 % greater than x , than x is what % less than y ?
"y = 1.6 x x = y / 1.6 = 10 y / 16 = 5 y / 8 x is 3 / 8 less which is 37.5 % less than y . the answer is c ."
multiply(divide(60, add(60, const_100)), const_100)