Question
Kimberly wanted to buy files for her students. If she bought 16 files, she would need another $40. If she bought 21 files, she would be short of $70. How much did Kimberly have?
4 m

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Kimberly wanted to buy files for her students. If she bought 16 files, she would need another $40. If she bought 21 files, she would be short of $70. How much did Kimberly have?