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Answer:
1500 T-shirt cards
Step-b.y-step explanation:
The fraction that are T-shirt cards is found from ...
coupon : T-shirt = 9 : 2
T-shirt : total = 2 : (9+2) = 2 : 11
Then the number of T-shirt cards will be (2/11)(8250) = 1500.
1500 of the cards are T-shirt cards.