at what price must an article costing rs . 150 be marked in order that after deducting 10 % from the list price . it may be sold at a profit of 30 % on the cost price ?
"cp = 150 sp = 150 * ( 130 / 100 ) = 195 mp * ( 90 / 100 ) = 195 mp = 216.67 answer : d"
divide(multiply(add(150, divide(multiply(150, 30), const_100)), const_100), subtract(const_100, 10))