A single printer can finish a print run in 8 hours. How much of the run does it complete in 3 hours?

Correct answer to question 187 (Arithmetic Reasoning): 3/8 of the run

Method

Working at a steady rate, the printer completes 1/8 of the run every hour, so in 3 hours it finishes 3 x 1/8, or 3/8 of the run.