Risa spent ¹₄ of her salary on a washing machine and ³₄ of the remainder on a blender. If she saved the remaining $78, how much was her salary?
Fraction of the salary spent on the washing machine = ¹₄

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

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

Washing Machine	Remainder		Total
1x4	3x4		4x4
	Blender	Savings
	3x3	1x3
4 u	9 u	3 u	16 u

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

Total salary = 16 u

Amount spent of the washing machine = 4 u
Amount spent on the blender = 9 u
Amount of savings = 3 u

3 u = 78

1 u = 78 ÷ 3 = 26

Risa's salary
= 16 u
= 16 x 26
= $416

Answer(s): $416