a corporation paid $ 7 million in federal taxes on its first $ 50 million of gross profits and then $ 30 million in federal taxes on the next $ 100 million in gross profits . by approximately what percent did the ratio of federal taxes to gross profits increase from the first $ 50 million in profits to the next $ 100 million in profits ?
"difference in ratios = ( 30 / 100 ) - ( 7 / 50 ) = ( 8 / 50 ) % change = ( change ( 8 / 50 ) / original ratio ( 7 / 50 ) ) * 100 = 114 % answer - c"
multiply(divide(subtract(divide(add(30, 7), 100), divide(7, 50)), divide(7, 50)), const_100)