An elephant can run 1/4 of a mile in 36 seconds. At this rate, which expression can be used to determine how fast an elephant runs in miles per hour?

1. First you need to understand that 36 seconds is 1/100 of a mile.

2. An elephant can run 0.25 miles (1/4 of a mile) in 1/100 of a hour.

3. To even this out, multiply 0.25 by 100 to find how many miles per hour an elephant can run (25 miles per hour!)