At a park, each adult ticket cost $28 and each child ticket cost $11. On Friday, the number of adult tickets sold was 196 less than the number of child tickets. On Saturday, the number of adult tickets sold decreased by 45% while the number of child tickets sold increased by 50%. If a total of 1319 tickets were sold on Saturday, how much money was collected on Friday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 196	2 u + 196
Change	- 0.45 u	+ 0.5 u + 98
After	0.55 u	1.5 u + 294	2.05 u + 294

45% x 1 u = ⁴⁵₁₀₀ x 1 u = 0.45 u 
50% x 1 u = ⁵⁰₁₀₀ x 1 u = 0.5 u
50% x 196 = ⁵⁰₁₀₀ x 196 = 98

Number of tickets sold on Saturday
= 0.55 u + 1.5 u + 294
= 2.05 u + 294

2.05 u + 294 = 1319
2.05 u = 1319 - 294
2.05 u = 1025

1 u = 1025 ÷ 2.05 = 500

Amount collected from adult tickets on Friday
= 1 u x 28
= 500 x 28
= $14000

Amount collected from child tickets on Friday
= 11(1 u + 196)
= 11(500 + 196)
= 11 x 696
= $7656

Total amount collected on Friday
= 14000 + 7656
= $21656

Answer(s):$21656