if albert ’ s monthly earnings rise by 14 % , he would earn $ 678 . if , instead , his earnings rise by only 15 % , how much ( in $ ) would he earn this month ?
"= 678 / 1.14 ∗ 1.15 = 683 = 683 answer is c"
multiply(divide(678, add(const_1, divide(14, const_100))), add(const_1, divide(15, const_100)))