Question
An express train travelled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach is destination 600 km from the starting point ?
Answer: Option A
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Time taken to cover 600 km = `(600/100)`hrs. = 6 hrs.
Number of stoppages = ` 600/75 - 1` = 7
Total time of stoppage = (3 x 7) min = 21 min.
Hence , total time taken = 6 hrs 21 min.
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