On Monday, 490 more men than women attended a concert. On Tuesday, the number of men decreased by 40% and the number of women increased by 70%. 1122 audience attended the concert on Tuesday. If each ticket cost $20, how much money was collected from the sale of concert tickets for the two days?

	Men		Women
Comparing between the men and the women at first	490 more
Before	5x2	+ 490	10x1
Change	- 2x2	- 196	+ 7x1
After	3x2	+ 294	17x1

	Men		Women
Before	10 u + 490		10 u
Change	- 4 u - 196		+ 7 u
After	6 u + 294		17 u

40% = ⁴⁰₁₀₀ = ²₅

70% = ⁷⁰₁₀₀ = ⁷₁₀

40% x 490
= ⁴⁰₁₀₀ x 490
= 196

490 - 196 = 294

Total number of tickets sold on Tuesday 
= 6 u + 294 + 17 u
= 23 u + 294 

23 u + 294 = 1122
23 u = 1122 - 294
23 u = 828

1 u = 828 ÷ 23 = 36

Total number of tickets sold for the two days
= (10 u + 490) + 10 u + (6 u + 294) + 17 u
= 43 u + 784
= 43 x 36 + 784
= 2332

Amount collected from the sale of concert tickets for the two days
= 2332 x 20
= $46640

Answer(s): $46640