The distance around the tire of a motorized scooter is 21.98 inches. The tires make one revolution every 1/10 second. Rounding to the nearest tenth, what is the speed of the scooter in miles per hour?

Find the speed of the Scooter in miles/hr.

Speed = distance/time

Distance = 21.98 inches = 0.00034548611miles

Time = 10 seconds = 0.00277778 hrs.

Speed = 21.98/10

Speed = 2.198 inches/seconds

or

Speed =.12miles/hr.