A train question....

[heatup]

A train that is 1 mile in length travels at 15 miles per hour. How long does it take that train to go through a tunnel that is also 1 mile in length?

 

[jsterkel]

What have you tried so far? What part are you stuck on?

 

[heatup]

I got the answer of 4 minutes....I think that might be right, just not sure. I divided 60 by 15.

 

[jsterkel]

I think that 4 minutes is not the correct answer. The division of 60/15 seems a bit random to me.

To answer this, you have to answer two questions.

1) How far does the train have to go?
2) Once you know how far, how long will it take the train to go that far at 15 miles per hour.

 

[burakaltr]

A train that is 1 mile in length travels at 15 miles per hour. How long does it take that train to go through a tunnel that is also 1 mile in length?

The chhogler will have to travel the tunnel length plus its own length

v* time = distance covered