At a concert hall, each adult ticket cost $37 and each child ticket cost $13. On Monday, the number of adult tickets sold was 96 less than the number of child tickets. On Tuesday, the number of adult tickets sold decreased by 20% while the number of child tickets sold increased by 50%. If a total of 604 tickets were sold on Tuesday, how much money was collected on Monday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 96	2 u + 96
Change	- 0.2 u	+ 0.5 u + 48
After	0.8 u	1.5 u + 144	2.3 u + 144

20% x 1 u = ²⁰₁₀₀ x 1 u = 0.2 u 
50% x 1 u = ⁵⁰₁₀₀ x 1 u = 0.5 u
50% x 96 = ⁵⁰₁₀₀ x 96 = 48

Number of tickets sold on Tuesday
= 0.8 u + 1.5 u + 144
= 2.3 u + 144

2.3 u + 144 = 604
2.3 u = 604 - 144
2.3 u = 460

1 u = 460 ÷ 2.3 = 200

Amount collected from adult tickets on Monday
= 1 u x 37
= 200 x 37
= $7400

Amount collected from child tickets on Monday
= 13(1 u + 96)
= 13(200 + 96)
= 13 x 296
= $3848

Total amount collected on Monday
= 7400 + 3848
= $11248

Answer(s):$11248