a car dealership has 40 cars on the lot , 20 % of which are silver . if the dealership receives a new shipment of 80 cars , 35 % of which are not silver , what percentage of total number of cars are silver ?
"the number of silver cars is 0.2 * 40 + 0.35 * 80 = 36 the percentage of cars which are silver is 36 / 120 = 30 % the answer is a ."
multiply(divide(add(multiply(40, divide(20, const_100)), multiply(80, divide(35, const_100))), add(40, 80)), const_100)