How much time will it take a train that is 0.25 miles long to pass through a tunnel that is 3.5 miles long if the train's speed is 90 mph? Count the time from the moment the fore-part of it enters the tunnel and till the moment the hinder part leaves it.

2 mins 30 seconds
3 mins 40 seconds
5 mins 35 seconds
4 mins 45 seconds

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