Answer:
12 pickles
Explanation:
You have $12
Tickets are $2.50
Pickles are $0.75/each
You pay for the tickets:
12 - 2.50 = $9.50
You have $9.50, and go to buy some pickles:
9.50/0.75 = 12.6666
You can't have 12.6 pickles so you actually buy 12 pickles.
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You can't buy 13 because you don't have enough, but you do end up with fifty cents change :)
12 pickles x 0.75 =$9.00
$12 - $9.00 (pickles) - $2.50 (ticket) = $0.50