At a tourist attraction, each adult ticket cost $32 and each child ticket cost $13. On Saturday, the number of adult tickets sold was 135 less than the number of child tickets. On Sunday, the number of adult tickets sold decreased by 15% while the number of child tickets sold increased by 20%. If a total of 1187 tickets were sold on Sunday, how much money was collected on Saturday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 135	2 u + 135
Change	- 0.15 u	+ 0.2 u + 27
After	0.85 u	1.2 u + 162	2.05 u + 162

15% x 1 u = ¹⁵₁₀₀ x 1 u = 0.15 u 
20% x 1 u = ²⁰₁₀₀ x 1 u = 0.2 u
20% x 135 = ²⁰₁₀₀ x 135 = 27

Number of tickets sold on Sunday
= 0.85 u + 1.2 u + 162
= 2.05 u + 162

2.05 u + 162 = 1187
2.05 u = 1187 - 162
2.05 u = 1025

1 u = 1025 ÷ 2.05 = 500

Amount collected from adult tickets on Saturday
= 1 u x 32
= 500 x 32
= $16000

Amount collected from child tickets on Saturday
= 13(1 u + 135)
= 13(500 + 135)
= 13 x 635
= $8255

Total amount collected on Saturday
= 16000 + 8255
= $24255

Answer(s):$24255