Station B is located between stations A and C. The distance from A to B is 400 km 400 \text{ km} 400 km , and from B to C is 375 km 375 \text{ km} 375...
Question
Station B is located between stations A and C. The distance from A to B is , and from B to C is . A train takes the same amount of time to travel from A to B as it does from B to C. If the train's speed between A and B is , what is the difference between the average speed of the train over the entire journey from A to C and its speed between B and C?