by selling 150 apples , a fruit - seller gains the selling price of 30 apples . find the gain percent ?
"option c explanation : sp = cp + g 150 sp = 150 cp + 30 sp 120 sp = 150 cp 120 - - - 30 cp 100 - - - ? = > 25 %"
multiply(divide(30, subtract(150, 30)), const_100)