At a tourist attraction, each adult ticket cost $39 and each child ticket cost $13. On Wednesday, the number of adult tickets sold was 50 less than the number of child tickets. On Thursday, the number of adult tickets sold decreased by 40% while the number of child tickets sold increased by 50%. If a total of 1965 tickets were sold on Thursday, how much money was collected on Wednesday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 50	2 u + 50
Change	- 0.4 u	+ 0.5 u + 25
After	0.6 u	1.5 u + 75	2.1 u + 75

40% x 1 u = ⁴⁰₁₀₀ x 1 u = 0.4 u 
50% x 1 u = ⁵⁰₁₀₀ x 1 u = 0.5 u
50% x 50 = ⁵⁰₁₀₀ x 50 = 25

Number of tickets sold on Thursday
= 0.6 u + 1.5 u + 75
= 2.1 u + 75

2.1 u + 75 = 1965
2.1 u = 1965 - 75
2.1 u = 1890

1 u = 1890 ÷ 2.1 = 900

Amount collected from adult tickets on Wednesday
= 1 u x 39
= 900 x 39
= $35100

Amount collected from child tickets on Wednesday
= 13(1 u + 50)
= 13(900 + 50)
= 13 x 950
= $12350

Total amount collected on Wednesday
= 35100 + 12350
= $47450

Answer(s):$47450