On Wednesday, 480 more women than men attended a concert. On Thursday, the number of women decreased by 20% and the number of men increased by 70%. 509 audience attended the concert on Thursday. If each ticket cost $10, 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	480 more
Before	5x2	+ 480	10x1
Change	- 1x2	- 96	+ 7x1
After	4x2	+ 384	17x1

	Women		Men
Before	10 u + 480		10 u
Change	- 2 u - 96		+ 7 u
After	8 u + 384		17 u

20% = ²⁰₁₀₀ = ¹₅

70% = ⁷⁰₁₀₀ = ⁷₁₀

20% x 480
= ²⁰₁₀₀ x 480
= 96

480 - 96 = 384

Total number of tickets sold on Thursday 
= 8 u + 384 + 17 u
= 25 u + 384 

25 u + 384 = 509
25 u = 509 - 384
25 u = 125

1 u = 125 ÷ 25 = 5

Total number of tickets sold to all the men
= 10 u + 17 u
= 27 u 
= 27 x 5
= 135

Amount collected from the sale of concert tickets to all the men
= 135 x 10
= $1350

Answer(s): $1350