Hello I am not looking for answers I just want some sort of direction. Im a little stuck :

So i need to calculate the average speed of point a which is either
66(distance ) or 70 , over 80 ( time ) i cant tell weather the distance is 66 or 70 so im going to put 2 answers
the formula for speed is D/T Ive calculated ( for 66,80 = 0.825 ) and ( for 70,80 = 0.875) but my answer choices are
A.1.5 miles/min

B.600 miles/min

C.0.67 miles/min

D.1 mile/min

| d
|70 'A' i
| s
| t.
|
|__________________
Time 80

Please help im not sure what to do. Thank you !! <3

If you have miles and minutes, the speed is

miles/minutes

Just divide the distance by the time