Question
It takes Machine W and Machine B 20 minutes to print a total of 1420 copies of flyers. Machine W can print 31 copies of flyers in one minute. How many copies of flyers can Machine X print per minute?
2 m

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It takes Machine W and Machine B 20 minutes to print a total of 1420 copies of flyers. Machine W can print 31 copies of flyers in one minute. How many copies of flyers can Machine X print per minute?