At a museum, each adult ticket cost $38 and each child ticket cost $9. On Friday, the number of adult tickets sold was 160 less than the number of child tickets. On Saturday, the number of adult tickets sold decreased by 30% while the number of child tickets sold increased by 35%. If a total of 1241 tickets were sold on Saturday, how much money was collected on Friday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 160	2 u + 160
Change	- 0.3 u	+ 0.35 u + 56
After	0.7 u	1.35 u + 216	2.05 u + 216

30% x 1 u = ³⁰₁₀₀ x 1 u = 0.3 u 
35% x 1 u = ³⁵₁₀₀ x 1 u = 0.35 u
35% x 160 = ³⁵₁₀₀ x 160 = 56

Number of tickets sold on Saturday
= 0.7 u + 1.35 u + 216
= 2.05 u + 216

2.05 u + 216 = 1241
2.05 u = 1241 - 216
2.05 u = 1025

1 u = 1025 ÷ 2.05 = 500

Amount collected from adult tickets on Friday
= 1 u x 38
= 500 x 38
= $19000

Amount collected from child tickets on Friday
= 9(1 u + 160)
= 9(500 + 160)
= 9 x 660
= $5940

Total amount collected on Friday
= 19000 + 5940
= $24940

Answer(s):$24940