On Wednesday, 400 more men than women attended a concert. On Thursday, the number of men decreased by 50% and the number of women increased by 70%. 1234 audience attended the concert on Thursday. If each ticket cost $8, how much money was collected from the sale of concert tickets to all the women?

	Men		Women
Comparing between the men and the women at first	400 more
Before	2x5	+ 400	10x1
Change	- 1x5	- 200	+ 7x1
After	1x5	+ 200	17x1

	Men		Women
Before	10 u + 400		10 u
Change	- 5 u - 200		+ 7 u
After	5 u + 200		17 u

50% = ⁵⁰₁₀₀ = ¹₂

70% = ⁷⁰₁₀₀ = ⁷₁₀

50% x 400
= ⁵⁰₁₀₀ x 400
= 200

400 - 200 = 200

Total number of tickets sold on Thursday 
= 5 u + 200 + 17 u
= 22 u + 200 

22 u + 200 = 1234
22 u = 1234 - 200
22 u = 1034

1 u = 1034 ÷ 22 = 47

Total number of tickets sold to all the women
= 10 u + 17 u
= 27 u 
= 27 x 47
= 1269

Amount collected from the sale of concert tickets to all the women
= 1269 x 8
= $10152

Answer(s): $10152