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His collection contains two types of cards. A pack of trading card A cost $4, and a pack of trading card B cost $7. How many packs of each type of trading card were purchased if the total number of packs
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His collection contains two types of cards. A pack of trading card A cost $4, and a pack of trading card B cost $7. How many packs of each type of trading card were purchased if the total number of packs is 11.

User Claj
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he has 8 packs of pack A and 2 backs of pack B
User Phanto
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