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1. A train 150 m long crosses a milestone is 15 seconds and crosses another train of the same lengh travelling in the opposite direction in 12 seconds. The speed of the second train in km/hr is.
- A. 52
- B. 52
- C. 52
- D. 52
Answer: Option C
Explanation:
Speed of the first train = 150/15 = 10 mps.
speed of the second train = x mps.
According to the question:
x + 10 = (150 + 150)/8
x = 27.5 mps = 27.5 × 3600/1000 = 99 kmph. Ans: D
speed of the second train = x mps.
According to the question:
x + 10 = (150 + 150)/8
x = 27.5 mps = 27.5 × 3600/1000 = 99 kmph. Ans: D
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