Total Average Speed: Calculating the Journey of a 150-Mile Segment at 50 mph Followed by 200 Miles at 80 mph

When traveling long distances, understanding both speed and time is essential—not only for navigation but also to calculate average speeds accurately. A common question that arises is: What is the average speed for a train journey covering 150 miles at 50 miles per hour followed by 200 miles at 80 miles per hour?

In this SEO-optimized article, we break down the journey step by step to determine the overall average speed, an essential metric for planning efficient travel.

Understanding the Context


Understanding the Journey Breakdown

The train travels two consecutive segments:

  • Segment 1: 150 miles at 50 mph
  • Segment 2: 200 miles at 80 mph

Key Insights

While total distance is straightforward, average speed is defined as total distance divided by total time, not the simple arithmetic mean of speeds.


Step 1: Calculate Time Taken for Each Segment

To find the total time, use the formula:
Time = Distance ÷ Speed

  • Time for first segment:
    150 miles ÷ 50 mph = 3 hours
  • Time for second segment:
    200 miles ÷ 80 mph = 2.5 hours

Final Thoughts

Total travel time = 3 + 2.5 = 5.5 hours


Step 2: Calculate Total Distance Traveled

Total distance = 150 miles + 200 miles = 350 miles


Step 3: Calculate Average Speed for the Entire Journey

Average Speed = Total Distance ÷ Total Time
= 350 miles ÷ 5.5 hours
63.64 miles per hour


Final Answer: Average Speed of the Entire Trip

The average speed for the train journey covering 150 miles at 50 mph followed by 200 miles at 80 mph is approximately 63.6 mph, or rounded, 64 mph depending on context.