Pierre spent ²₅ of his salary and gave $879 to his wife. Of the remaining amount, he saved ¹₃ of it and gave ³₁₀ of it to his sisters. He then donated ²₃ of what he had left away and gave the remaining $56 to his son. What was Pierre's salary?

Spent	Wife	Saved	Sisters	Donated	Son	Total
2 u	3 u					5 u
	$879	1 p	2 p
			3x3	7x3
				2x7	1x7
			9 b	14 b	7 b $56

Amount that his son received = 7 b

7 b = 56
1 b = 56 ÷ 7 = 8

Amount of his salary given to his sisters, his donations and his son
= 9 b + 14 b + 7 b
= 30 b
= 30 x 8
= $240

2 p = 240 
1 p = 240 ÷ 2 = 120

Amount of his salary given to his savings, his sisters, his donations and his son
= 1 p + 2 p
= 3 p
= 3 x 120
= $360

Amount of his salary given to his wife, his savings, his sisters, his donations and his son
= 879 + 360
= $1239 

3 u = 1239 
1 u = 1239 ÷ 3 = 413

Pierre's salary
= 5 u
= 5 x 413
= $2065

Answer(s): $2065