SOLUTION: a car travels at 60 miles per hour along a straight road for 2 hour and then 40 miles per hour for the next 3 hr. what is the car's average speed for the entire 5 hour?

Question 813737: a car travels at 60 miles per hour along a straight road for 2 hour and then 40 miles per hour for the next 3 hr. what is the car's average speed for the entire 5 hour?

what is the formula for that? or i just simply add?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Average speed is always ( total distance traveled ) / ( total time spent traveling )

mi
---------------

mi
---------------
Total distance = mi
Total time = hrs
---------------
Average speed =
mi/hr
RELATED QUESTIONS
A car travels at 50 miles per hour for 3/4 hour, then at 40 miles per hour for the next... (answered by Alan3354)

A man travels a certain distance at 60 miles per hour and returns over the same road at... (answered by Alan3354)

A man travels a distance of 20 miles at 60 miles per hour and then returns over the same... (answered by stanbon)

A car travels 60 miles per hour for 10 min and then decreases speed to 40 miles per hour... (answered by Alan3354)

A car drives for one hour at 60 km/hr then for 30 minutes at 40 miles per hour. What is... (answered by Alan3354)

What is the average rate, in miles per hour, of a car that travels 20 miles at 40 miles... (answered by TimothyLamb)

A motorist travels at 30 miles/hour for 2 hours and 60 miles/hour for 1 hour. What is his (answered by rfer)

John drove a car at 50 miles per hour for 3 hour and at 60 miles per hour for 2 hour find (answered by richwmiller)

A car drives north at 50 miles per hour for 2 hours. It then turns northwest and travels (answered by mananth)