SOLUTION: A cab driver drove from the airport to a passenger’s home at an average speed of 55 miles per hour. He returned to the airport along the same highway at an average speed of 45 mile

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Question 474587: A cab driver drove from the airport to a passenger’s home at an average speed of 55 miles per hour. He returned to the airport along the same highway at an average speed of 45 miles per hour. What was the driver’s average speed over the entire trip?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
n/55+n/45=2
45n+55n=4950
100n=4950
n=49.5..