How long will it take you to travel 20 miles on a bus that drives 60 miles/h?

20 Minutes

Explanation:

Well we know Mph (Miles per hour) is distance over time :

R (rate) = 60

d (distance) = 20

t (time) = Unknown

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 R =  

   ↓

60 =

   ↓

 t =

    ↓

 t =  or 0.3333

So basically it would take one third of an hour. Lets change these units to minutes.

60 * 0.333333 = 20

So it would take you 20 minutes to drive 20 miles on a bus that drives 60 mph

Hope that helps

~Siascon~

I would choose the D.

But if your teacher taught you the things in that way there is a big problem because first of all you are talking about an ACCELERATION of gravity and ot's unit of measurement it's m/s^2 but better to respect your professor's will So D is the right one...