The tourist attraction tickets are priced at $19 and $16.  The number of $19-dollar tickets available is  1³₅ that of the number of $16-dollar tickets. 2 out of 3 of the $19-dollar tickets and all the $16-dollar tickets were sold. The ticket sales amounted to $5440. How much more would have been collected if all the tickets were sold?

	$19	$16
Comparing $19 and $16 tickets at first	8x3 = 24 u	5x3 = 15 u
Before	3x8 = 24 u
Change	- 2x8 = - 16 u	- 15 u
After	1x8 = 8 u	0 u

The number of 19 tickets at first is repeated.  Make the number of 19 tickets the same.  LCM of 3 and 8 is 24.

1³₅ = ⁸₅

Number of $19 tickets : $16 tickets = 8 : 5

	$19	$16	Total
Number	16 u	15 u
Value	$19	$16
Total value	304 u	240 u	$5440

Total amount collected from the sale of the sold tickets
= 304 u + 240 u
= 544 u

1 u = 5440 ÷ 544 = 10

Number of $19-tickets left unsold
= 8 u 
= 8 x 10
= 80

More amount to be collected if all the tickets were sold
= 80 x 19
= $1520

Answer(s): $1520