- A72 km/h
- B80 km/h
- C90 km/h
- D100 km/h
Step-by-Step Solution
Total distance = 150 + 350 = 500 m in 20 s = 25 m/s. Speed = km/h.
Answer: C) 90 km/h
A train 150 m long crosses a platform 350 m long in 20 seconds. What is the speed of the train?
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