With out any halt a train travels a certain distance with an average speed of 40 km ph , and with halts it covers the same distance at an average speed of 25 kmph. When it is traveling with halts, how many minutes/per hour does the train halt on an average ?  Choose the most appropriate option.
A) 48 min. B) 12min. C) 15min. D) 36min. E) 19min.
With halt in 1 hour the train travels 60km   With out halt for traveling same distance it take 40/25 = 8/5 = 96 minutes   :. 36 minutes is the halting time per hour   ANSWER:36min.
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With out any halt a train travels a certain distance with an average speed of 40 km ph , and with halts it covers the same distance at an average speed of 25 kmph. When it is traveling with halts, how many minutes/per hour does the train halt on an average ?