Gwen spent ³₅ of her salary on a toaster oven and ³₅ of the remainder on a food processor. If she saved the remaining $100, how much was her salary?
Fraction of the salary spent on the toaster oven = ³₅

Fraction of the salary on the remainder
= 1 - ³₅
= ²₅

Fraction of the remainder on savings
= 1 - ³₅
= ²₅

Toaster Oven	Remainder		Total
3x5	2x5		5x5
	Food Processor	Savings
	3x2	2x2
15 u	6 u	4 u	25 u

The remainder and the total amount on the food processor and the savings are the same. Make the remainder and the total amount on the food processor and the savings the same.  LCM of 2 and 5 is 10.

Total salary = 25 u

Amount spent of the toaster oven = 15 u
Amount spent on the food processor = 6 u
Amount of savings = 4 u

4 u = 100

1 u = 100 ÷ 4 = 25

Gwen's salary
= 25 u
= 25 x 25
= $625

Answer(s): $625