Working together, printer M and printer N would finish the task in 24 minutes. Printer M alone would finish the task in 60 minutes. How many pages does the task contain if printer N prints 5 pages a minute more than printer M?  Choose the correct option.
A) 400
B) 450
C) 600
D) 1200
E) 1500
24*M + 24*N = x pages   in 24 mins printer M will print = 24/60 * x pages = 2/5*x pages   thus in 24 mins printer printer N will print x - 2/5*x = 3/5*x pages   Also it is given that printer N prints 5 more pages per min that printer M. In 24 mins printer N will print 120 more pages than printer M   thus 3/5*x - 2/5*x = 120 =&gt; x = 600 pages   600)
<result>C</result>
Working together, printer M and printer N would finish the task in 24 minutes. Printer M alone would finish the task in 60 minutes. How many pages does the task contain if printer N prints 5 pages a minute more than printer M?