50 % of a number is more than 40 % of 120 by 180 . find the number ?
"( 50 / 100 ) * x – ( 40 / 100 ) * 120 = 180 1 / 2 x = 228 x = 456 answer : a"
divide(multiply(add(divide(multiply(120, 40), const_100), 180), const_100), 50)