The zoo tickets are priced at $8 and $6.  The number of $8-dollar tickets available is  2¹₅ that of the number of $6-dollar tickets. 3 out of 4 of the $8-dollar tickets and all the $6-dollar tickets were sold. The ticket sales amounted to $2304. How much more would have been collected if all the tickets were sold?

	$8	$6
Comparing $8 and $6 tickets at first	11x4 = 44 u	5x4 = 20 u
Before	4x11 = 44 u
Change	- 3x11 = - 33 u	- 20 u
After	1x11 = 11 u	0 u

The number of 8 tickets at first is repeated.  Make the number of 8 tickets the same.  LCM of 4 and 11 is 44.

2¹₅ = ¹¹₅

Number of $8 tickets : $6 tickets = 11 : 5

	$8	$6	Total
Number	33 u	20 u
Value	$8	$6
Total value	264 u	120 u	$2304

Total amount collected from the sale of the sold tickets
= 264 u + 120 u
= 384 u

1 u = 2304 ÷ 384 = 6

Number of $8-tickets left unsold
= 11 u 
= 11 x 6
= 66

More amount to be collected if all the tickets were sold
= 66 x 8
= $528

Answer(s): $528