Min spent ¹₄ of her salary on a vacuum cleaner and ²₅ of the remainder on a washing machine. If she saved the remaining $216, how much was her salary?
Fraction of the salary spent on the vacuum cleaner = ¹₄

Fraction of the salary on the remainder
= 1 - ¹₄
= ³₄

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

Vacuum Cleaner	Remainder		Total
1x5	3x5		4x5
	Washing Machine	Savings
	2x3	3x3
5 u	6 u	9 u	20 u

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

Total salary = 20 u

Amount spent of the vacuum cleaner = 5 u
Amount spent on the washing machine = 6 u
Amount of savings = 9 u

9 u = 216

1 u = 216 ÷ 9 = 24

Min's salary
= 20 u
= 20 x 24
= $480

Answer(s): $480