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The tail of a 1-mile long train exits a tunnel exactly 3 minutes after the front of the train entered the tunnel. If the train is moving \(80\) miles per hour, how long is the tunnel?

 May 24, 2022
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Let the length of the tunnel ==T 

 

T + 1 ==80  x  3/60

T + 1 ==4

T ==4 - 1 ==3 miles - length of the tunnel.

 May 24, 2022

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