On Monday, 700 more women than men attended a concert. On Tuesday, the number of women decreased by 50% and the number of men increased by 80%. 1408 audience attended the concert on Tuesday. If each ticket cost $14, how much money was collected from the sale of concert tickets on Monday?

	Women		Men
Comparing between the women and the men at first	700 more
Before	2x5	+ 700	5x2
Change	- 1x5	- 350	+ 4x2
After	1x5	+ 350	9x2

	Women		Men
Before	10 u + 700		10 u
Change	- 5 u - 350		+ 8 u
After	5 u + 350		18 u

50% = ⁵⁰₁₀₀ = ¹₂

80% = ⁸⁰₁₀₀ = ⁴₅

50% x 700
= ⁵⁰₁₀₀ x 700
= 350

700 - 350 = 350

Total number of tickets sold on Tuesday 
= 5 u + 350 + 18 u
= 23 u + 350 

23 u + 350 = 1408
23 u = 1408 - 350
23 u = 1058

1 u = 1058 ÷ 23 = 46

Total number of tickets sold on Monday
= 10 u + 700 + 10 u 
= 20 u + 700
= 20 x 46 + 350
= 1270

Amount collected from the sale of concert tickets on Monday
= 1270 x 14
= $17780

Answer(s): $17780