Question
1 file $3
1 textbook $6
Wendy had just enough money to buy 3 textbooks. However, she bought some files instead. How many files did she buy if she spent all her money?
4 m

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1 file $3
1 textbook $6
Wendy had just enough money to buy 3 textbooks. However, she bought some files instead. How many files did she buy if she spent all her money?