On Friday, 410 more men than women attended a concert. On Saturday, the number of men decreased by 40% and the number of women increased by 70%. 1212 audience attended the concert on Saturday. If each ticket cost $9, 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	410 more
Before	5x2	+ 410	10x1
Change	- 2x2	- 164	+ 7x1
After	3x2	+ 246	17x1

	Men		Women
Before	10 u + 410		10 u
Change	- 4 u - 164		+ 7 u
After	6 u + 246		17 u

40% = ⁴⁰₁₀₀ = ²₅

70% = ⁷⁰₁₀₀ = ⁷₁₀

40% x 410
= ⁴⁰₁₀₀ x 410
= 164

410 - 164 = 246

Total number of tickets sold on Saturday 
= 6 u + 246 + 17 u
= 23 u + 246 

23 u + 246 = 1212
23 u = 1212 - 246
23 u = 966

1 u = 966 ÷ 23 = 42

Total number of tickets sold for the two days
= (10 u + 410) + 10 u + (6 u + 246) + 17 u
= 43 u + 656
= 43 x 42 + 656
= 2462

Amount collected from the sale of concert tickets for the two days
= 2462 x 9
= $22158

Answer(s): $22158