Section: Arithmetic Reasoning

11) A machine prints 30 newspapers in 20 minutes. At this rate how many hours would it take to print 900 newspapers?

1. 7
2. 8
3. 9
4. 10

If the machine prints 30 newspapers in 20 minutes, it prints:

(30 newspapers)/(20 minutes) = 3/2 newspapers per minute.

To calculate the time to print 900 newspapers:

(900 newspapers)/(3/2 newspapers per minute) = 1800/3 = 600 minutes ÷ 60 minutes per hour = 10 hours