Oscar spent ³₅ of his salary and gave $516 to his wife. Of the remaining amount, he saved ¹₄ of it and gave ³₇ of it to his grandparents. He then donated ²₃ of what he had left away and gave the remaining $20 to his daughter. What was Oscar's salary?

Spent	Wife	Saved	Grandparents	Donated	Daughter	Total
3 u	2 u					5 u
	$516	1 p	3 p
			3x3	4x3
				2x4	1x4
			9 b	8 b	4 b $20

Amount that his daughter received = 4 b

4 b = 20
1 b = 20 ÷ 4 = 5

Amount of his salary given to his grandparents, his donations and his daughter
= 9 b + 8 b + 4 b
= 21 b
= 21 x 5
= $105

3 p = 105 
1 p = 105 ÷ 3 = 35

Amount of his salary given to his savings, his grandparents, his donations and his daughter
= 1 p + 3 p
= 4 p
= 4 x 35
= $140

Amount of his salary given to his wife, his savings, his grandparents, his donations and his daughter
= 516 + 140
= $656 

2 u = 656 
1 u = 656 ÷ 2 = 328

Oscar's salary
= 5 u
= 5 x 328
= $1640

Answer(s): $1640