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Judy is given some money to buy files. If she buys 5 files, she will have $4 left. If she buys 9 files, she will need another $5. How much money does she have?
11 years ago

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Steve
If a file costs x dollars,

5x+4 = 9x-5
4x = 9
x = 2.25

So, she has $15.25
11 years ago

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