At a theme park, each adult ticket cost $32 and each child ticket cost $13. On Wednesday, the number of adult tickets sold was 85 less than the number of child tickets. On Thursday, the number of adult tickets sold decreased by 25% while the number of child tickets sold increased by 20%. If a total of 492 tickets were sold on Thursday, how much money was collected on Wednesday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 85	2 u + 85
Change	- 0.25 u	+ 0.2 u + 17
After	0.75 u	1.2 u + 102	1.95 u + 102

25% x 1 u = ²⁵₁₀₀ x 1 u = 0.25 u 
20% x 1 u = ²⁰₁₀₀ x 1 u = 0.2 u
20% x 85 = ²⁰₁₀₀ x 85 = 17

Number of tickets sold on Thursday
= 0.75 u + 1.2 u + 102
= 1.95 u + 102

1.95 u + 102 = 492
1.95 u = 492 - 102
1.95 u = 390

1 u = 390 ÷ 1.95 = 200

Amount collected from adult tickets on Wednesday
= 1 u x 32
= 200 x 32
= $6400

Amount collected from child tickets on Wednesday
= 13(1 u + 85)
= 13(200 + 85)
= 13 x 285
= $3705

Total amount collected on Wednesday
= 6400 + 3705
= $10105

Answer(s):$10105