Answer:
16 hours
Explanation:
Speed=distance/time
Let S be speed, D be distance, and t be time.
Let's solve the speed equation for t since we are looking for time, t.

Multiply both sides by t:

Divide both sides by S:

So our distance is 239000 and our speed is 250 so plug them in:

Putting into the calculator now:
t=956 minutes (I knew this was in minutes because the speed was 250 miles per minute)
We need to convert this to hours. 60 minutes=1 hour.
60 minutes=1 hour
956 minutes=x hours
You can setup a proportion if you don't know you just need to take 956 and divide it by 60. Like so:

Cross multiply:


Divide both sides by 60:

Putting into calculator now:
x=15.9333333333333 which mean we have almost 16 hours