SOLUTION: Jack drives 2 hours at a speed of 3 km/hr and 3 hrs at 40 km/hr. What is his average speed for the entire trip?

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Question 606276: Jack drives 2 hours at a speed of 3 km/hr and 3 hrs at 40 km/hr. What is his average speed for the entire trip?
Answer by solver91311(24713) About Me  (Show Source):
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Multiply rate for the first part of the trip times the time for the first part of the trip to find out how much distance he traveled for the first part. Then multiply the rate for the second part of the trip times the time for the second part of the trip to find the distance for that part. Add these two distances then divide by the total time for the whole trip.

John

My calculator said it, I believe it, that settles it
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