Question
It takes Machine S and Machine B 30 minutes to print a total of 1380 copies of newsletters. Machine S can print 20 copies of newsletters in one minute. How many copies of newsletters can Machine T print per minute?
2 m

Click button first when a symbol is required. X

It takes Machine S and Machine B 30 minutes to print a total of 1380 copies of newsletters. Machine S can print 20 copies of newsletters in one minute. How many copies of newsletters can Machine T print per minute?