Question

Mrs. Browns girls scout troop had a carwash to earn some funds. they saved 1/6 of the money. They used 1/2 of the money to go horseback riding. They then had $100 left. How much did they initially make washing cars/

Answer 1

If you have a certain amount of money, then take away 1/6 of that amount and 1/2 of that amount, you'll have $100. So if "M" is money.

M - (1/6))M - (1/2)M = 100

1/2 is 3/6. So

M - (4/6)M = 100

(2/6)M = 100

M = 600/2

OR...$300