At a stadium, each adult ticket cost $26 and each child ticket cost $9. On Thursday, the number of adult tickets sold was 60 less than the number of child tickets. On Friday, the number of adult tickets sold decreased by 40% while the number of child tickets sold increased by 5%. If a total of 558 tickets were sold on Friday, how much money was collected on Thursday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 60	2 u + 60
Change	- 0.4 u	+ 0.05 u + 3
After	0.6 u	1.05 u + 63	1.65 u + 63

40% x 1 u = ⁴⁰₁₀₀ x 1 u = 0.4 u 
5% x 1 u = ⁵₁₀₀ x 1 u = 0.05 u
5% x 60 = ⁵₁₀₀ x 60 = 3

Number of tickets sold on Friday
= 0.6 u + 1.05 u + 63
= 1.65 u + 63

1.65 u + 63 = 558
1.65 u = 558 - 63
1.65 u = 495

1 u = 495 ÷ 1.65 = 300

Amount collected from adult tickets on Thursday
= 1 u x 26
= 300 x 26
= $7800

Amount collected from child tickets on Thursday
= 9(1 u + 60)
= 9(300 + 60)
= 9 x 360
= $3240

Total amount collected on Thursday
= 7800 + 3240
= $11040

Answer(s):$11040