The bird park tickets are priced at $29 and $20.  The number of $29-dollar tickets available is  2¹₄ that of the number of $20-dollar tickets. 3 out of 4 of the $29-dollar tickets and all the $20-dollar tickets were sold. The ticket sales amounted to $11030. How much more would have been collected if all the tickets were sold?

	$29	$20
Comparing $29 and $20 tickets at first	9x4 = 36 u	4x4 = 16 u
Before	4x9 = 36 u
Change	- 3x9 = - 27 u	- 16 u
After	1x9 = 9 u	0 u

The number of 29 tickets at first is repeated.  Make the number of 29 tickets the same.  LCM of 4 and 9 is 36.

2¹₄ = ⁹₄

Number of $29 tickets : $20 tickets = 9 : 4

	$29	$20	Total
Number	27 u	16 u
Value	$29	$20
Total value	783 u	320 u	$11030

Total amount collected from the sale of the sold tickets
= 783 u + 320 u
= 1103 u

1 u = 11030 ÷ 1103 = 10

Number of $29-tickets left unsold
= 9 u 
= 9 x 10
= 90

More amount to be collected if all the tickets were sold
= 90 x 29
= $2610

Answer(s): $2610