SOLUTION: I drove 100 km from A to B in one hour and back form B to A in two hours. What's my average speed?

SOLUTION: I drove 100 km from A to B in one hour and back form B to A in two hours. What's my average speed?

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Question 1002866: I drove 100 km from A to B in one hour and back form B to A in two hours. What's my average speed?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the total distance you drove was 200 miles (100 going and 100 coming back).

the total time is took was 3 hours (one hour going and 2 hours coming back).

rate * time = speed becomes:

rate * 3 = 200

solve for rate to get rate = 200 / 3 = 66 and 2/3 km per hour

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