70 % of 300 + 25 % of 400 - ? = 256
"explanation : solution : let 70 % of 300 + 25 % of 400 - x = 256 . then , x = ( 70 / 100 * 300 ) + ( 25 / 100 * 400 ) - 256 = 210 + 100 - 256 = 54 . answer : c"
divide(multiply(70, 300), 25)