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Home > PC3 > Chapter 3 > Lesson 3.1.4 > Problem 3-61


The Monsters are going to visit relatives. They drive over many kinds of terrain ranging from the highway to gravel roads. They are able to drive  mph for hours, mph for another hour, and only mph for the final minutes of the trip. What was their average speed for the entire -hour trip?   

First calculate the total distance the Monsters traveled.
Then determine the average speed using: