Question
It takes Machine X and Machine B 50 minutes to print a total of 3300 copies of posters. Machine X can print 31 copies of posters in one minute. How many copies of posters can Machine Y print per minute?
2 m

Click button first when a symbol is required. X

It takes Machine X and Machine B 50 minutes to print a total of 3300 copies of posters. Machine X can print 31 copies of posters in one minute. How many copies of posters can Machine Y print per minute?