Risa spent ¹₈ of her salary on a kettle and ²₃ of the remainder on a food processor. If she saved the remaining $266, how much was her salary?
Fraction of the salary spent on the kettle = ¹₈

Fraction of the salary on the remainder
= 1 - ¹₈
= ⁷₈

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

Kettle	Remainder		Total
1x3	7x3		8x3
	Food Processor	Savings
	2x7	1x7
3 u	14 u	7 u	24 u

The remainder and the total amount on the food processor and the savings are the same. Make the remainder and the total amount on the food processor and the savings the same.  LCM of 7 and 3 is 21.

Total salary = 24 u

Amount spent of the kettle = 3 u
Amount spent on the food processor = 14 u
Amount of savings = 7 u

7 u = 266

1 u = 266 ÷ 7 = 38

Risa's salary
= 24 u
= 24 x 38
= $912

Answer(s): $912