Yoko spent ¹₅ of her salary on a speaker and ²₃ of the remainder on a refrigerator. If she saved the remaining $124, 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 - ²₃
= ¹₃

Speaker	Remainder		Total
1x3	4x3		5x3
	Refrigerator	Savings
	2x4	1x4
3 u	8 u	4 u	15 u

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

Total salary = 15 u

Amount spent of the speaker = 3 u
Amount spent on the refrigerator = 8 u
Amount of savings = 4 u

4 u = 124

1 u = 124 ÷ 4 = 31

Yoko's salary
= 15 u
= 15 x 31
= $465

Answer(s): $465