Question
Some pens and files were packed into black and blue bags. There were 11 less blue bags than black bags. Each black carton contained 10 pens and each blue carton contained 14 files. Given that there were 30 more files than pens in total, how much files were there?
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Some pens and files were packed into black and blue bags. There were 11 less blue bags than black bags. Each black carton contained 10 pens and each blue carton contained 14 files. Given that there were 30 more files than pens in total, how much files were there?