SOLUTION: Danielle drives from her home to the store at an average speed of 40mph. She returns home along the same route an an average speed of 60mph an hour. What is her average speed in m
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Question 581382: Danielle drives from her home to the store at an average speed of 40mph. She returns home along the same route an an average speed of 60mph an hour. What is her average speed in miles per hour for her entire trip?
Answer by algebrahouse.com(1659) (Show Source): You can put this solution on YOUR website!
Average of 40 and 60:
40 + 60
-------- = average of 40 and 60
2
100
---- {added 40 and 60}
2
= 50 mph average {divided 100 by 2}
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