At a theme park, each adult ticket cost $38 and each child ticket cost $14. On Thursday, the number of adult tickets sold was 200 less than the number of child tickets. On Friday, the number of adult tickets sold decreased by 10% while the number of child tickets sold increased by 35%. If a total of 495 tickets were sold on Friday, how much money was collected on Thursday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 200	2 u + 200
Change	- 0.1 u	+ 0.35 u + 70
After	0.9 u	1.35 u + 270	2.25 u + 270

10% x 1 u = ¹⁰₁₀₀ x 1 u = 0.1 u 
35% x 1 u = ³⁵₁₀₀ x 1 u = 0.35 u
35% x 200 = ³⁵₁₀₀ x 200 = 70

Number of tickets sold on Friday
= 0.9 u + 1.35 u + 270
= 2.25 u + 270

2.25 u + 270 = 495
2.25 u = 495 - 270
2.25 u = 225

1 u = 225 ÷ 2.25 = 100

Amount collected from adult tickets on Thursday
= 1 u x 38
= 100 x 38
= $3800

Amount collected from child tickets on Thursday
= 14(1 u + 200)
= 14(100 + 200)
= 14 x 300
= $4200

Total amount collected on Thursday
= 3800 + 4200
= $8000

Answer(s):$8000