Question
On a highway trip, Joseph drives the first 25 miles at 55 mph, and the next 15 miles at 70 mph. What is his average speed for this trip?
Step 1
We need to find his average speed for this trip. We know that average speed is equal to total distance traveled divided by total time. So, we can write this as: \[Average\ Speed = \frac{Total\ Distance}{Total\ Time}\] Show more…
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George drives the first 30 miles of a trip at a constant rate of 40 miles per hour. If he drives the remaining 75 miles of the trip at a constant rate of 50 miles per hour, what is his average speed for the entire trip?
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