Xavier spent ³₇ of his salary and gave $1245 to his wife. Of the remaining amount, he saved ¹₅ of it and gave ⁵₁₂ of it to his brothers. He then donated ²₃ of what he had left away and gave the remaining $21 to his daughter. What was Xavier's salary?

Spent	Wife	Saved	Brothers	Donated	Daughter	Total
3 u	4 u					7 u
	$1245	1 p	4 p
			5x3	7x3
				2x7	1x7
			15 b	14 b	7 b $21

Amount that his daughter received = 7 b

7 b = 21
1 b = 21 ÷ 7 = 3

Amount of his salary given to his brothers, his donations and his daughter
= 15 b + 14 b + 7 b
= 36 b
= 36 x 3
= $108

4 p = 108 
1 p = 108 ÷ 4 = 27

Amount of his salary given to his savings, his brothers, his donations and his daughter
= 1 p + 4 p
= 5 p
= 5 x 27
= $135

Amount of his salary given to his wife, his savings, his brothers, his donations and his daughter
= 1245 + 135
= $1380 

4 u = 1380 
1 u = 1380 ÷ 4 = 345

Xavier's salary
= 7 u
= 7 x 345
= $2415

Answer(s): $2415