Lynn spent ²₅ of her salary on a microwave oven and ³₄ of the remainder on a blender. If she saved the remaining $99, how much was her salary?
Fraction of the salary spent on the microwave oven = ²₅

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

Fraction of the remainder on savings
= 1 - ³₄
= ¹₄

Microwave Oven	Remainder		Total
2x4	3x4		5x4
	Blender	Savings
	3x3	1x3
8 u	9 u	3 u	20 u

The remainder and the total amount on the blender and the savings are the same. Make the remainder and the total amount on the blender and the savings the same.  LCM of 3 and 4 is 12.

Total salary = 20 u

Amount spent of the microwave oven = 8 u
Amount spent on the blender = 9 u
Amount of savings = 3 u

3 u = 99

1 u = 99 ÷ 3 = 33

Lynn's salary
= 20 u
= 20 x 33
= $660

Answer(s): $660