Ivory spent ³₅ of her salary on a lamp and ²₅ of the remainder on a washing machine. If she saved the remaining $210, how much was her salary?
Fraction of the salary spent on the lamp = ³₅

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

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

Lamp	Remainder		Total
3x5	2x5		5x5
	Washing Machine	Savings
	2x2	3x2
15 u	4 u	6 u	25 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 2 and 5 is 10.

Total salary = 25 u

Amount spent of the lamp = 15 u
Amount spent on the washing machine = 4 u
Amount of savings = 6 u

6 u = 210

1 u = 210 ÷ 6 = 35

Ivory's salary
= 25 u
= 25 x 35
= $875

Answer(s): $875