Rahul drives 120 miles at 60 miles per hour, and then he drives the next 120 miles at 40 miles per hour. What is his average speed for the entire trip in miles per hour?
Explanation
Total distance rahul drives = 120+120=240 miles
Joe drives at two different speeds: 60 mph and 40 mph.
Time spent driving 60 mph = 120 miles/60 mph = 2 hours
Time spent driving 40 mph = 120 miles/40 mph = 3 hours
Average Speed = = 48 mp
Hence, Option C is correct.
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