A plane flies 3115.8 miles in 7.2 hours. What is its average speed? (Speed =

miles

hours

)

Average speed = total distances / total time

3115.8 / 7.2 = 432.75 mi/h

Formula for speed = Distance/Time

Now that we know that, the distance the plane flew is 3115.8 miles and the time was 7.2 hours

So we arrange it like this:

3115.8 / 7.2

Now if we use a calculator, your answer should be ...

432.75 mph