<PRE><B>Question 1124043</B>
A half price ticket will save you $45/2 = $22.50

The $90 pass will be paid for, if you buy $90/22.50 = 4 tickets.

At 4 tickets, your total cost is $180. Either way. More than 4, and the savings add up. 

Equations -

Cost with no discount -

C = 45T    (Cost is 45 times ticket price)

Cost with discount -

C = 22.5T + 90  (Now cost is 22.5 per ticket plus 90 pass fee)

45T = 22.5T +90  

22.5T = 90

T = 4 (when cost is same, at 4 tickets sold) 
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