SOLUTION: A car travels the first 12 km of its journey in 25 minutes and the next 3 km in 5 minutes. What is the average speed of the car?

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Question 968828: A car travels the first 12 km of its journey in 25 minutes and the next 3 km in 5 minutes. What is the average speed of the car?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A car travels the first 12 km of its journey in 25 minutes and the next 3 km in 5 minutes.
Total travel time: 25 + 5 = 30 min which is .5 hrs
Total distance: 12 + 3 = 15 km
:
What is the average speed of the car?
Av speed = total dist/total time
15%2F.5 = 30 km/hr is the average speed