A train is 1 mile long and is going through a tunnel a mile long, if the train is going 15 miles per hour, how long will it take 4 the train to get completley through the tunnel?

since

15miles/60min= 1mile/x min
x=4 min

60min= 1hr

To find out how long it will take for the train to completely pass through the tunnel, we need to calculate the total distance the train needs to cover.

The train is 1 mile long and it also needs to pass through a 1-mile long tunnel. So, the total distance the train needs to cover is the sum of the train's length and the tunnel's length, which is 1 + 1 = 2 miles.

Next, we can use the formula:
time = distance / speed

Plugging in the values, we have:
time = 2 miles / 15 miles per hour

Now, we can divide 2 by 15 to get the time it will take for the train to pass through the tunnel:
time = 0.1333 hours

Since we typically express time in minutes, let's convert hours to minutes. There are 60 minutes in an hour, so:
time = 0.1333 hours * 60 minutes per hour
time ≈ 8 minutes

Therefore, it will take approximately 8 minutes for the train to completely pass through the tunnel.