Question
Some pens and pencils were packed into grey and purple bags. There were 4 more grey bags than purple bags. Each grey carton contained 10 pens and each purple carton contained 12 pencils. Given that there were 12 fewer pens than pencils in total, how much pens were there?
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Some pens and pencils were packed into grey and purple bags. There were 4 more grey bags than purple bags. Each grey carton contained 10 pens and each purple carton contained 12 pencils. Given that there were 12 fewer pens than pencils in total, how much pens were there?