Question
Elijah has a total of 70 of grey and red files. 16 of the grey files and half of the red files are new. How many of his red files are new if he has a total of 15 new files?
4 m

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Elijah has a total of 70 of grey and red files. 16 of the grey files and half of the red files are new. How many of his red files are new if he has a total of 15 new files?