Pierre spent ³₅ of his salary and gave $721 to his wife. Of the remaining amount, he saved ¹₅ of it and gave ⁴₉ of it to his siblings. He then donated ²₃ of what he had left away and gave the remaining $20 to his daughter. What was Pierre's salary?

Spent	Wife	Saved	Siblings	Donated	Daughter	Total
3 u	2 u					5 u
	$721	1 p	4 p
			4x3	5x3
				2x5	1x5
			12 b	10 b	5 b $20

Amount that his daughter received = 5 b

5 b = 20
1 b = 20 ÷ 5 = 4

Amount of his salary given to his siblings, his donations and his daughter
= 12 b + 10 b + 5 b
= 27 b
= 27 x 4
= $108

4 p = 108 
1 p = 108 ÷ 4 = 27

Amount of his salary given to his savings, his siblings, 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 siblings, his donations and his daughter
= 721 + 135
= $856 

2 u = 856 
1 u = 856 ÷ 2 = 428

Pierre's salary
= 5 u
= 5 x 428
= $2140

Answer(s): $2140