A rowing crew travels at 6 miles per hour with the current and 4 miles per hour against it. How much longer does a 12 mile trip take going against the current than with it?

Correct answer to question 183 (Arithmetic Reasoning): 1 hour

Method

Find the time for each direction and subtract. With the current, 12 miles at 6 mph takes 2 hours; against it, 12 miles at 4 mph takes 3 hours, a difference of 1 hour.