if the cost price of 165 chocolates is equal to the selling price of 150 chocolates , the gain percent is
"let c . p . of each chocolate be re . 1 . then , c . p . of 150 chocolates = rs . 150 ; s . p . of 150 chocolates = rs . 165 . gain % = 15 / 150 * 100 = 10 % answer : c"
divide(const_100, divide(150, subtract(165, 150)))