The distance from Phoenix to Tucson is 120 miles. A car made the journey in 1 hour and 45 minutes. What was the average speed of the car in miles per hour?

Question

 Need help asap!!!

Answer 1

d = r · t

120 mi = r · 1.75 hr           divide both sides by 1.75

68.5714286 mi/hr ≈ r

 

The car's average speed is approximately 69 mph.