At a tourist attraction, each adult ticket cost $32 and each child ticket cost $13. On Monday, the number of adult tickets sold was 140 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 30%. If a total of 407 tickets were sold on Tuesday, how much money was collected on Monday?

	Adult tickets	Child tickets	Total tickets
Before	1 u	1 u + 140	2 u + 140
Change	- 0.05 u	+ 0.3 u + 42
After	0.95 u	1.3 u + 182	2.25 u + 182

5% x 1 u = ⁵₁₀₀ x 1 u = 0.05 u 
30% x 1 u = ³⁰₁₀₀ x 1 u = 0.3 u
30% x 140 = ³⁰₁₀₀ x 140 = 42

Number of tickets sold on Tuesday
= 0.95 u + 1.3 u + 182
= 2.25 u + 182

2.25 u + 182 = 407
2.25 u = 407 - 182
2.25 u = 225

1 u = 225 ÷ 2.25 = 100

Amount collected from adult tickets on Monday
= 1 u x 32
= 100 x 32
= $3200

Amount collected from child tickets on Monday
= 13(1 u + 140)
= 13(100 + 140)
= 13 x 240
= $3120

Total amount collected on Monday
= 3200 + 3120
= $6320

Answer(s):$6320