Question
A self-help book costs thrice as much as a file. Fiona paid $3.50 for 2 books and 1 file. Find the cost of 1 file. Give your answer in dollars.
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A self-help book costs thrice as much as a file. Fiona paid $3.50 for 2 books and 1 file. Find the cost of 1 file. Give your answer in dollars.