- A50 km/h
- B45 km/h
- C52 km/h
- D48 km/h
Step-by-Step Solution
Time = h for 240 km → km/h. (50 is the simple average of the speeds — wrong for equal distances.)
Answer: D) 48 km/h
A train runs the first 120 km at 60 km/h and the next 120 km at 40 km/h. What is its average speed for the whole run?
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