Benny is traveling at a speed of 15 mi/h. What is his speed in feet per second?
A few facts:
1 mile = 5,280 feet
15 mi = 15 * 5280 = ? total feet
1 hour = 60 * 60 = ? total seconds
Divide the total number of feet by the total number of seconds.
We'll be glad to check your answer.