On Friday, 320 more men than women attended a concert. On Saturday, the number of men decreased by 40% and the number of women increased by 70%. 1480 audience attended the concert on Saturday. If each ticket cost $14, 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	320 more
Before	5x2	+ 320	10x1
Change	- 2x2	- 128	+ 7x1
After	3x2	+ 192	17x1

	Men		Women
Before	10 u + 320		10 u
Change	- 4 u - 128		+ 7 u
After	6 u + 192		17 u

40% = ⁴⁰₁₀₀ = ²₅

70% = ⁷⁰₁₀₀ = ⁷₁₀

40% x 320
= ⁴⁰₁₀₀ x 320
= 128

320 - 128 = 192

Total number of tickets sold on Saturday 
= 6 u + 192 + 17 u
= 23 u + 192 

23 u + 192 = 1480
23 u = 1480 - 192
23 u = 1288

1 u = 1288 ÷ 23 = 56

Total number of tickets sold for the two days
= (10 u + 320) + 10 u + (6 u + 192) + 17 u
= 43 u + 512
= 43 x 56 + 512
= 2920

Amount collected from the sale of concert tickets for the two days
= 2920 x 14
= $40880

Answer(s): $40880