Question

An object travels 8 miles in 20 minutes at a constant speed. What's the object's speed in miles per hour.

a. 32
b. 28
c. 24
d. 20

Answer 1

Answer:

Convert minutes to hour

since 60minutes = 1hr

20 min = x

cross multiply

20 = 60x

x = 20/60

x = 1/3

Hence 20mins = 1/3 hr

Speed = 8miles/(1/3)hr

speed = 8 miles * 3/1 hr

speed = 24 miles/hr

Answer 2

I think it should be 20

I am not sure about it