Tammy spent ¹₅ of her salary on a microwave oven and ²₃ of the remainder on a television set. If she saved the remaining $156, how much was her salary?
Fraction of the salary spent on the microwave oven = ¹₅

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

Fraction of the remainder on savings
= 1 - ²₃
= ¹₃

Microwave Oven	Remainder		Total
1x3	4x3		5x3
	Television Set	Savings
	2x4	1x4
3 u	8 u	4 u	15 u

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

Total salary = 15 u

Amount spent of the microwave oven = 3 u
Amount spent on the television set = 8 u
Amount of savings = 4 u

4 u = 156

1 u = 156 ÷ 4 = 39

Tammy's salary
= 15 u
= 15 x 39
= $585

Answer(s): $585