On Saturday, 620 more women than men attended a concert. On Sunday, the number of women decreased by 10% and the number of men increased by 50%. 1470 audience attended the concert on Sunday. If each ticket cost $15, how much money was collected from the sale of concert tickets for the two days?

	Women		Men
Comparing between the women and the men at first	620 more
Before	10x1	+ 620	2x5
Change	- 1x1	- 62	+ 1x5
After	9x1	+ 558	3x5

	Women		Men
Before	10 u + 620		10 u
Change	- 1 u - 62		+ 5 u
After	9 u + 558		15 u

10% = ¹⁰₁₀₀ = ¹₁₀

50% = ⁵⁰₁₀₀ = ¹₂

10% x 620
= ¹⁰₁₀₀ x 620
= 62

620 - 62 = 558

Total number of tickets sold on Sunday 
= 9 u + 558 + 15 u
= 24 u + 558 

24 u + 558 = 1470
24 u = 1470 - 558
24 u = 912

1 u = 912 ÷ 24 = 38

Total number of tickets sold for the two days
= (10 u + 620) + 10 u + (9 u + 558) + 15 u
= 44 u + 1178
= 44 x 38 + 1178
= 2850

Amount collected from the sale of concert tickets for the two days
= 2850 x 15
= $42750

Answer(s): $42750