Question
Peter paid $25 for 7 files and 4 notebooks. The total cost of a file and a notebook was $4. Penelope bought 4 files and 2 notebooks. How much did she pay for these items?
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Peter paid $25 for 7 files and 4 notebooks. The total cost of a file and a notebook was $4. Penelope bought 4 files and 2 notebooks. How much did she pay for these items?