Question
Ivan bought the same number of files and notebooks. The total cost of 3 files and 1 notebook was $14. The total cost of 1 file and 3 notebooks was $18. He spent a total of $32. How many files did Ivan buy?
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Ivan bought the same number of files and notebooks. The total cost of 3 files and 1 notebook was $14. The total cost of 1 file and 3 notebooks was $18. He spent a total of $32. How many files did Ivan buy?