Fiona spent ¹₆ of her salary on a microwave oven and ²₃ of the remainder on a gas stove. If she saved the remaining $105, how much was her salary?
Fraction of the salary spent on the microwave oven = ¹₆

Fraction of the salary on the remainder
= 1 - ¹₆
= ⁵₆

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

Microwave Oven	Remainder		Total
1x3	5x3		6x3
	Gas Stove	Savings
	2x5	1x5
3 u	10 u	5 u	18 u

The remainder and the total amount on the gas stove and the savings are the same. Make the remainder and the total amount on the gas stove and the savings the same.  LCM of 5 and 3 is 15.

Total salary = 18 u

Amount spent of the microwave oven = 3 u
Amount spent on the gas stove = 10 u
Amount of savings = 5 u

5 u = 105

1 u = 105 ÷ 5 = 21

Fiona's salary
= 18 u
= 18 x 21
= $378

Answer(s): $378