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put this solution on YOUR website!A train 200 meters long was traveling at a constant rate of 20 meters per second through a tunnel. It took 1 minute and 10 seconds from the time that the front of the train entered the tunnel until the time that the back of the train left the tunnel. What is the length of the tunnel, in meters?
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Let the length of the tunnel be x meters.
The train must travel x+200 meters from the time the
front enters the tunnel and the rear exits the tunnel.
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The distance was traveled in 70 seconds at 20 meters/sec.
So the train must have gone 70*20=1400 meters.
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EQUATION:
x+200=1400
x=1200 meters
The tunnel is 1200 meters long.
Cheers,
Stan H.
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