a printing press will print 6,000 copies in 20 minutes. A second press can print 15000 copies in 60 minutes. How many more copy per minutes will the faster press print more than the slower press?

Printing Press 1: 6000/20 minutes which is 300/minute

Printing Press 2: 15000/60 minutes which is 250/minute

The faster press (the first one) would print 50 more copies per minute than the slower one (the second one).