Question
It takes Machine A and Machine B 15 minutes to print a total of 810 copies of newsletters. Machine A can print 23 copies of newsletters in one minute. How many copies of newsletters can Machine B print per minute?
2 m

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It takes Machine A and Machine B 15 minutes to print a total of 810 copies of newsletters. Machine A can print 23 copies of newsletters in one minute. How many copies of newsletters can Machine B print per minute?