At a museum, each adult ticket cost $24 and each child ticket cost $13. On Monday, the number of adult tickets sold was 64 less than the number of child tickets. On Tuesday, the number of adult tickets sold decreased by 5% while the number of child tickets sold increased by 25%. If a total of 1400 tickets were sold on Tuesday, how much money was collected on Monday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 64	2 u + 64
Change	- 0.05 u	+ 0.25 u + 16
After	0.95 u	1.25 u + 80	2.2 u + 80

5% x 1 u = ⁵₁₀₀ x 1 u = 0.05 u 
25% x 1 u = ²⁵₁₀₀ x 1 u = 0.25 u
25% x 64 = ²⁵₁₀₀ x 64 = 16

Number of tickets sold on Tuesday
= 0.95 u + 1.25 u + 80
= 2.2 u + 80

2.2 u + 80 = 1400
2.2 u = 1400 - 80
2.2 u = 1320

1 u = 1320 ÷ 2.2 = 600

Amount collected from adult tickets on Monday
= 1 u x 24
= 600 x 24
= $14400

Amount collected from child tickets on Monday
= 13(1 u + 64)
= 13(600 + 64)
= 13 x 664
= $8632

Total amount collected on Monday
= 14400 + 8632
= $23032

Answer(s):$23032