Question
It takes Machine H and Machine B 40 minutes to print a total of 2560 copies of posters. Machine H can print 29 copies of posters in one minute. How many copies of posters can Machine J print per minute?
2 m

Click button first when a symbol is required. X

It takes Machine H and Machine B 40 minutes to print a total of 2560 copies of posters. Machine H can print 29 copies of posters in one minute. How many copies of posters can Machine J print per minute?