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CAN YOU ANSWER THE PUZZLER?

Train Travel

Train in Tunnel

Question

A 500 yard long train, travelling at 90 mph,
enters a tunnel of four and a half miles in length.

How long will elapse between the moment
the front of the train enters the tunnel and the moment
the end of the train clears the tunnel?

Answer

3.19 minutes
1 mile = 1760 yards
500 yards = 500/1760 ~ 0.285 miles
Tunnel + train = 4.5 + 0.285 = 4.785 miles
Time to clear tunnel = 4.785 /90 = 0.053167 hr = 3.19 mins

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