Gabby spent ²₃ of her salary on a lamp and ³₅ of the remainder on a microwave oven. If she saved the remaining $74, how much was her salary?
Fraction of the salary spent on the lamp = ²₃

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

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

Lamp	Remainder		Total
2x5	1x5		3x5
	Microwave Oven	Savings
	3x1	2x1
10 u	3 u	2 u	15 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 1 and 5 is 5.

Total salary = 15 u

Amount spent of the lamp = 10 u
Amount spent on the microwave oven = 3 u
Amount of savings = 2 u

2 u = 74

1 u = 74 ÷ 2 = 37

Gabby's salary
= 15 u
= 15 x 37
= $555

Answer(s): $555