Cathy had a sum of money. She spent 1/5 of it in September, 1/4 of it in October and 120 in November. After spending these amounts of money, she still had 540 left. How much money did she have at first?

Question

Cathy had a sum of money.  She spent 1/5 of it in September,  1/4 of it in October and 120 in November.  After spending these amounts of money,  she still had 540 left. How much money did she have at first?

Henry · Answer

Cathy had $X. x - x/5 - x/4 - 120 = 540. x - 4x/20 - 5x/20 - 120 = 540, 20x - 4x - 5x - 2400 = 10,800, 11x = 13,200, X = $1200.

Anonymous · Answer

1200