John spent ³₇ of his salary and gave $910 to his wife. Of the remaining amount, he saved ¹₅ of it and gave ³₁₀ of it to his grandparents. He then donated ²₃ of what he had left away and gave the remaining $28 to his daughter. What was John's salary?

Spent	Wife	Saved	Grandparents	Donated	Daughter	Total
3 u	4 u					7 u
	$910	1 p	4 p
			3x3	7x3
				2x7	1x7
			9 b	14 b	7 b $28

Amount that his daughter received = 7 b

7 b = 28
1 b = 28 ÷ 7 = 4

Amount of his salary given to his grandparents, his donations and his daughter
= 9 b + 14 b + 7 b
= 30 b
= 30 x 4
= $120

4 p = 120 
1 p = 120 ÷ 4 = 30

Amount of his salary given to his savings, his grandparents, his donations and his daughter
= 1 p + 4 p
= 5 p
= 5 x 30
= $150

Amount of his salary given to his wife, his savings, his grandparents, his donations and his daughter
= 910 + 150
= $1060 

4 u = 1060 
1 u = 1060 ÷ 4 = 265

John's salary
= 7 u
= 7 x 265
= $1855

Answer(s): $1855