At a safari park, each adult ticket cost $23 and each child ticket cost $14. On Tuesday, the number of adult tickets sold was 55 less than the number of child tickets. On Wednesday, the number of adult tickets sold decreased by 15% while the number of child tickets sold increased by 40%. If a total of 1427 tickets were sold on Wednesday, how much money was collected on Tuesday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 55	2 u + 55
Change	- 0.15 u	+ 0.4 u + 22
After	0.85 u	1.4 u + 77	2.25 u + 77

15% x 1 u = ¹⁵₁₀₀ x 1 u = 0.15 u 
40% x 1 u = ⁴⁰₁₀₀ x 1 u = 0.4 u
40% x 55 = ⁴⁰₁₀₀ x 55 = 22

Number of tickets sold on Wednesday
= 0.85 u + 1.4 u + 77
= 2.25 u + 77

2.25 u + 77 = 1427
2.25 u = 1427 - 77
2.25 u = 1350

1 u = 1350 ÷ 2.25 = 600

Amount collected from adult tickets on Tuesday
= 1 u x 23
= 600 x 23
= $13800

Amount collected from child tickets on Tuesday
= 14(1 u + 55)
= 14(600 + 55)
= 14 x 655
= $9170

Total amount collected on Tuesday
= 13800 + 9170
= $22970

Answer(s):$22970