Question
At a shop, Alice paid $21 for 7 items: 3 correction tapes and 4 files. The total cost of 3 correction tapes is $3 more than the total cost of 4 files. How much did 1 correction tape cost?
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At a shop, Alice paid $21 for 7 items: 3 correction tapes and 4 files. The total cost of 3 correction tapes is $3 more than the total cost of 4 files. How much did 1 correction tape cost?