The safari park tickets are priced at $22 and $18.  The number of $22-dollar tickets available is  1¹₂ that of the number of $18-dollar tickets. 3 out of 4 of the $22-dollar tickets and all the $18-dollar tickets were sold. The ticket sales amounted to $2052. How much more would have been collected if all the tickets were sold?

	$22	$18
Comparing $22 and $18 tickets at first	3x4 = 12 u	2x4 = 8 u
Before	4x3 = 12 u
Change	- 3x3 = - 9 u	- 8 u
After	1x3 = 3 u	0 u

The number of 22 tickets at first is repeated.  Make the number of 22 tickets the same.  LCM of 4 and 3 is 12.

1¹₂ = ³₂

Number of $22 tickets : $18 tickets = 3 : 2

	$22	$18	Total
Number	9 u	8 u
Value	$22	$18
Total value	198 u	144 u	$2052

Total amount collected from the sale of the sold tickets
= 198 u + 144 u
= 342 u

1 u = 2052 ÷ 342 = 6

Number of $22-tickets left unsold
= 3 u 
= 3 x 6
= 18

More amount to be collected if all the tickets were sold
= 18 x 22
= $396

Answer(s): $396