L1.21-Mile Long Train

If you enjoy riddles, teasers, or posers then this is just for you. Each comes with a postulated question that tricks and challenges the mind. Some are easy and some are hard. Try not to over think them and enjoy the imagery. The answer to the riddle, poser, or teaser is below. Try not to look until you are truly ready.

Answer

In order for the train to pass completely through the tunnel, it must travel 2 miles. After 1 mile’s travel, the train would be completely in the tunnel, and after another mile it would be completely out. Since the train is traveling at 1 mile a minute, it would take 2 minutes to pass through the tunnel.