At a park, each adult ticket cost $37 and each child ticket cost $10. On Wednesday, the number of adult tickets sold was 105 less than the number of child tickets. On Thursday, the number of adult tickets sold decreased by 5% while the number of child tickets sold increased by 40%. If a total of 852 tickets were sold on Thursday, how much money was collected on Wednesday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 105	2 u + 105
Change	- 0.05 u	+ 0.4 u + 42
After	0.95 u	1.4 u + 147	2.35 u + 147

5% x 1 u = ⁵₁₀₀ x 1 u = 0.05 u 
40% x 1 u = ⁴⁰₁₀₀ x 1 u = 0.4 u
40% x 105 = ⁴⁰₁₀₀ x 105 = 42

Number of tickets sold on Thursday
= 0.95 u + 1.4 u + 147
= 2.35 u + 147

2.35 u + 147 = 852
2.35 u = 852 - 147
2.35 u = 705

1 u = 705 ÷ 2.35 = 300

Amount collected from adult tickets on Wednesday
= 1 u x 37
= 300 x 37
= $11100

Amount collected from child tickets on Wednesday
= 10(1 u + 105)
= 10(300 + 105)
= 10 x 405
= $4050

Total amount collected on Wednesday
= 11100 + 4050
= $15150

Answer(s):$15150