SOLUTION: A car travels 60 miles in one hour, stops, travels 120 km in 1 1/2 hours, stops, and travels 60 km more in half in hour. What is the average speed of this car?

Question 838139: A car travels 60 miles in one hour, stops, travels 120 km in 1 1/2 hours, stops, and travels 60 km more in half in hour. What is the average speed of this car?
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
How long did the car stop?
Does the problem really mix miles and kilometers, or is that just a typo?
If those stops were not long, we can calculate as if the car had never stopped.
In that case, the car would have traveled
in

.
The average speed is
kilometers per hour
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