Question
It takes Machine C and Machine B 10 minutes to print a total of 550 copies of business cards. Machine C can print 23 copies of business cards in one minute. How many copies of business cards can Machine D print per minute?
2 m

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It takes Machine C and Machine B 10 minutes to print a total of 550 copies of business cards. Machine C can print 23 copies of business cards in one minute. How many copies of business cards can Machine D print per minute?