Basic Computer Knowledge Test Questions and Answers

Problems on Trains

1.

A 400m long train is running at 72 Kmph. how much time it will take to cross an electric pole? 

   A.) 15sec
   B.) 20sec
   C.) 19sec
   D.) 21sec

Answer: Option 'B'

Formula: Distance = Speed × Time
If we convert Kmph in to Mpsec multiply by 5/18,
400 = 72 KmpH × time
400 = 72×5/18 × time
Time = 20Sec

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