Question
It takes Machine X and Machine B 40 minutes to print a total of 3120 copies of newsletters. Machine X can print 38 copies of newsletters in one minute. How many copies of newsletters can Machine Y print per minute?
2 m

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It takes Machine X and Machine B 40 minutes to print a total of 3120 copies of newsletters. Machine X can print 38 copies of newsletters in one minute. How many copies of newsletters can Machine Y print per minute?