# SOLUTION: a train a mile and a half long takes 1 minute and a half to go through a tunnel a mile and a half long. how fast is it going?

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 Click here to see ALL problems on Miscellaneous Word Problems Question 349282: a train a mile and a half long takes 1 minute and a half to go through a tunnel a mile and a half long. how fast is it going? Answer by stanbon(57962)   (Show Source): You can put this solution on YOUR website!a train a mile and a half long takes 1 minute and a half to go through a tunnel a mile and a half long. how fast is it going? -------------------------------- distance the back of the train goes from the time the front enters the tunnel to the time that the back exits the tunnel: = 1.5 + 1.5 miles -- time to do that = 1 min = (1/60) hr. ----- Equation: rate = distance/time --- rate = 3 miles/(1/60) hr = 180 mph ============================ Note: If you just want the distance the front goes from the time it enters the tunnel till the front exits the tunnel the distance is 1.5 miles --- rate = 1.5(1/60) = 90 mph ============================ Cheers, Stan H.