On Saturday, 340 more women than men attended a concert. On Sunday, the number of women decreased by 50% and the number of men increased by 70%. 984 audience attended the concert on Sunday. If each ticket cost $20, how much money was collected from the sale of concert tickets to all the men?

	Women		Men
Comparing between the women and the men at first	340 more
Before	2x5	+ 340	10x1
Change	- 1x5	- 170	+ 7x1
After	1x5	+ 170	17x1

	Women		Men
Before	10 u + 340		10 u
Change	- 5 u - 170		+ 7 u
After	5 u + 170		17 u

50% = ⁵⁰₁₀₀ = ¹₂

70% = ⁷⁰₁₀₀ = ⁷₁₀

50% x 340
= ⁵⁰₁₀₀ x 340
= 170

340 - 170 = 170

Total number of tickets sold on Sunday 
= 5 u + 170 + 17 u
= 22 u + 170 

22 u + 170 = 984
22 u = 984 - 170
22 u = 814

1 u = 814 ÷ 22 = 37

Total number of tickets sold to all the men
= 10 u + 17 u
= 27 u 
= 27 x 37
= 999

Amount collected from the sale of concert tickets to all the men
= 999 x 20
= $19980

Answer(s): $19980