each month , after jill pays for rent , utilities , food , and other necessary expenses , she has one fifth of her net monthly salary left as discretionary income . of this discretionary income , she puts 30 % into a vacation fund , 20 % into savings , and spends 35 % on eating out and socializing . this leaves her with $ 108 dollar , which she typically uses for gifts and charitable causes . what is jill ’ s net monthly salary ?
"let x be the monthly salary 15 % of 1 / 5 * x = 108 x = 3600 answer d"
multiply(multiply(const_100, add(const_3, const_2)), divide(108, subtract(const_100, add(add(30, 20), 35))))