Time, Speed, and Distance (TSD) is a core pillar of quantitative aptitude. One of the most frequently asked yet misunderstood concepts is Average Speed. Most students lose marks by simply adding the speeds and dividing by two. Today, we’ll show you the mathematically sound way to solve this instantly.
The Question
A car travels from Point A to Point B at a speed of 40 km/h and returns from B to A at a speed of 60 km/h. What is the average speed of the car for the entire journey?
Correct Answer: (B) 48 km/h
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