Question

You need to move 45 boxes from the

warehouse to the loading dock. It
takes 20 minutes to move 10 boxes.
How long will it take to move all the
boxes? *Required
45 Minutes
1 Hour
1 Hour 30 minutes
2 Hours

Answer 1

The trick to converting your units is to write your conversion factor multiplication in such a neat way that the units cancel out nicely to get your desired units.
In this case,
20 minutes/10 boxes * 45 boxes = 2 * 45 minutes = 90 minutes = 1 hour 30 minutes.
Therefore, the correct answer is 1 hour 30 minutes.