A train travels 180 miles north at 60 mph and then 120 miles south at 40 mph. What is the average speed for the entire journey?

Sat, 02 May 2026 21:49:31 +0000

**Why This Train Journey Puzzles Travelers and Why It Matters** In an era of endless travel choices and rising curiosity about practical math in real life, a simple question is sparking thoughtful conversation across the U.S.: *What is the average speed for a train that travels 180 miles north at 60 mph and then 120 miles south at 40 mph?* This isn’t just a trivia nicety—understanding average speed reveals how time and distance shape journey efficiency. With more people evaluating transit options and managing commuting or vacation plans, the math behind these routes influences decisions beyond curiosity. Behind the curiosity lies a common mental model challenge: average speed is not the simple menu average of two speeds, but a calculated total distance over total travel time. This distinction matters for planners estimating arrival times or comparing transit options. With the train’s north and south segments not lasting equal durations, recognizing this creates clearer expectations—and trust in real-world planning. **Why the Journey Sparks Conversation**