Oliver spent ³₇ of his salary and gave $1276 to his wife. Of the remaining amount, he saved ¹₃ of it and gave ⁵₁₂ of it to his grandparents. He then donated ²₃ of what he had left away and gave the remaining $42 to his daughter. What was Oliver's salary?

Spent	Wife	Saved	Grandparents	Donated	Daughter	Total
3 u	4 u					7 u
	$1276	1 p	2 p
			5x3	7x3
				2x7	1x7
			15 b	14 b	7 b $42

Amount that his daughter received = 7 b

7 b = 42
1 b = 42 ÷ 7 = 6

Amount of his salary given to his grandparents, his donations and his daughter
= 15 b + 14 b + 7 b
= 36 b
= 36 x 6
= $216

2 p = 216 
1 p = 216 ÷ 2 = 108

Amount of his salary given to his savings, his grandparents, his donations and his daughter
= 1 p + 2 p
= 3 p
= 3 x 108
= $324

Amount of his salary given to his wife, his savings, his grandparents, his donations and his daughter
= 1276 + 324
= $1600 

4 u = 1600 
1 u = 1600 ÷ 4 = 400

Oliver's salary
= 7 u
= 7 x 400
= $2800

Answer(s): $2800