Help with this problem velocity

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The discussion revolves around calculating the average velocity of an automotive test driver who first travels north at 30 mi/h for 2 hours and then south at 60 mi/h for 1 hour. The average velocity is determined by the total displacement divided by the total time taken. After traveling north for 60 miles and then south for 60 miles, the driver ends up at the starting position, resulting in an average velocity of zero mi/h. Participants emphasize the distinction between average velocity and average speed, noting that average velocity considers direction and displacement. The final conclusion is that the average velocity of the vehicle is zero mi/h.
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A automotive test driver travels due north in a prototype hybrid vehicle at 30 mi/h for 2 hours. She then reverses her direction and travels due south at 60 mi/h for 1 hour.

What is the average velocity of the vehicle?



40 mi/h, south



45 mi/h, north



45 mi/h, south



zero mi/h



40 mi/h, north
 
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Do you know the meaning of "average velocity"? (And, most especially, do you know the difference between that and "average speed"?) How far from the starting position did she wind up? How long did it take her to move there?
 
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