Dana spent ¹₅ of her salary on a speaker and ³₅ of the remainder on a microwave oven. If she saved the remaining $304, how much was her salary?
Fraction of the salary spent on the speaker = ¹₅

Fraction of the salary on the remainder
= 1 - ¹₅
= ⁴₅

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

Speaker	Remainder		Total
1x5	4x5		5x5
	Microwave Oven	Savings
	3x4	2x4
5 u	12 u	8 u	25 u

The remainder and the total amount on the microwave oven and the savings are the same. Make the remainder and the total amount on the microwave oven and the savings the same.  LCM of 4 and 5 is 20.

Total salary = 25 u

Amount spent of the speaker = 5 u
Amount spent on the microwave oven = 12 u
Amount of savings = 8 u

8 u = 304

1 u = 304 ÷ 8 = 38

Dana's salary
= 25 u
= 25 x 38
= $950

Answer(s): $950