Answers

2015-10-27T12:51:26+05:30
It takes 195minutes to cover 221km
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2015-10-27T15:02:57+05:30
Time taken by trainto cover 51 km = 45 minutes
time taken to cover 1 km = 45/51
time taken to cover 221 km= 45×221/51
195 minutes
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