The stadium tickets are priced at $22 and $12.  The number of $22-dollar tickets available is  2¹₂ that of the number of $12-dollar tickets. 2 out of 3 of the $22-dollar tickets and all the $12-dollar tickets were sold. The ticket sales amounted to $876. How much more would have been collected if all the tickets were sold?

	$22	$12
Comparing $22 and $12 tickets at first	5x3 = 15 u	2x3 = 6 u
Before	3x5 = 15 u
Change	- 2x5 = - 10 u	- 6 u
After	1x5 = 5 u	0 u

The number of 22 tickets at first is repeated.  Make the number of 22 tickets the same.  LCM of 3 and 5 is 15.

2¹₂ = ⁵₂

Number of $22 tickets : $12 tickets = 5 : 2

	$22	$12	Total
Number	10 u	6 u
Value	$22	$12
Total value	220 u	72 u	$876

Total amount collected from the sale of the sold tickets
= 220 u + 72 u
= 292 u

1 u = 876 ÷ 292 = 3

Number of $22-tickets left unsold
= 5 u 
= 5 x 3
= 15

More amount to be collected if all the tickets were sold
= 15 x 22
= $330

Answer(s): $330