At a bird park, each adult ticket cost $22 and each child ticket cost $16. On Thursday, the number of adult tickets sold was 122 less than the number of child tickets. On Friday, the number of adult tickets sold decreased by 20% while the number of child tickets sold increased by 50%. If a total of 1563 tickets were sold on Friday, how much money was collected on Thursday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 122	2 u + 122
Change	- 0.2 u	+ 0.5 u + 61
After	0.8 u	1.5 u + 183	2.3 u + 183

20% x 1 u = ²⁰₁₀₀ x 1 u = 0.2 u 
50% x 1 u = ⁵⁰₁₀₀ x 1 u = 0.5 u
50% x 122 = ⁵⁰₁₀₀ x 122 = 61

Number of tickets sold on Friday
= 0.8 u + 1.5 u + 183
= 2.3 u + 183

2.3 u + 183 = 1563
2.3 u = 1563 - 183
2.3 u = 1380

1 u = 1380 ÷ 2.3 = 600

Amount collected from adult tickets on Thursday
= 1 u x 22
= 600 x 22
= $13200

Amount collected from child tickets on Thursday
= 16(1 u + 122)
= 16(600 + 122)
= 16 x 722
= $11552

Total amount collected on Thursday
= 13200 + 11552
= $24752

Answer(s):$24752