if 20 % of x is 15 less than 15 % of 1500 , then x is ?
"20 % of x = x / 5 ; 15 % of 1500 = 15 / 100 * 1500 = 225 given that , x / 5 = 225 - 15 = > x / 5 = 210 = > x = 1050 . answer : e"
divide(subtract(multiply(1500, divide(15, const_100)), 15), divide(20, const_100))