A car travels from city A to city B at an average speed of 60 km/h and returns at 40 km/h. What is the average speed for the entire trip?
Q1. A car travels from city A to city B at an average speed of 60 km/h and returns at 40 km/h. What is the average speed for the entire trip?
Answer: 48 km/h
Explanation: Average speed = Total distance / Total time. For equal distances, it's 2 * speed1 * speed2 / (speed1 + speed2), so 2 * 60 * 40 / (60 + 40) = 48 km/h.