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  9. Q46

CGPSC 2011 · Question 46 of 146

A train of length 110 m passes a pole in 3 seconds. How much time will it take to cross a railway bridge of length 165 m (in seconds)?

Time and Distance

  1. A5.5
  2. B7.5Correct
  3. C9.5
  4. D11.5

Answer: B. 7.5

Explanation

Speed = 110/3 m/s; time to cross bridge = (110 + 165)/(110/3) = 275 x 3/110 = 7.5 seconds.

Source: CGPSC PCS Prelims 2011 GS Paper, solved paper via iasexamportal.com

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