Question
Some files and pencils were packed into yellow and grey bags. There were 9 more yellow bags than grey bags. Each yellow carton contained 6 files and each grey carton contained 12 pencils. Given that there were 12 fewer files than pencils in total, how much files were there?
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Some files and pencils were packed into yellow and grey bags. There were 9 more yellow bags than grey bags. Each yellow carton contained 6 files and each grey carton contained 12 pencils. Given that there were 12 fewer files than pencils in total, how much files were there?