Directions
Sam's rate (his speed) varies depending on cycling conditions, such as wind and road conditions. On the way to the beach, he biked 20 miles in 1 hour, for a rate of 20 mph. On the way to the falls, he rode 45 miles in 3 hours, for an average rate of 15 mph.
To figure out Sam's rate, we can follow this formula:
Rate = Distance divided by Time
Also written as :
R = D/T