At a safari park, each adult ticket cost $24 and each child ticket cost $7. On Tuesday, the number of adult tickets sold was 200 less than the number of child tickets. On Wednesday, the number of adult tickets sold decreased by 5% while the number of child tickets sold increased by 20%. If a total of 1530 tickets were sold on Wednesday, how much money was collected on Tuesday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 200	2 u + 200
Change	- 0.05 u	+ 0.2 u + 40
After	0.95 u	1.2 u + 240	2.15 u + 240

5% x 1 u = ⁵₁₀₀ x 1 u = 0.05 u 
20% x 1 u = ²⁰₁₀₀ x 1 u = 0.2 u
20% x 200 = ²⁰₁₀₀ x 200 = 40

Number of tickets sold on Wednesday
= 0.95 u + 1.2 u + 240
= 2.15 u + 240

2.15 u + 240 = 1530
2.15 u = 1530 - 240
2.15 u = 1290

1 u = 1290 ÷ 2.15 = 600

Amount collected from adult tickets on Tuesday
= 1 u x 24
= 600 x 24
= $14400

Amount collected from child tickets on Tuesday
= 7(1 u + 200)
= 7(600 + 200)
= 7 x 800
= $5600

Total amount collected on Tuesday
= 14400 + 5600
= $20000

Answer(s):$20000