A truck traveled 205 miles in 3/12 hours. The distance is the product of the rate and the time. To the nearest tenth, what is the average speed of the delivery truck?

Distance = rate*time, or

distance = (average speed) * time, so

average speed = distance / time.

average speed = 205 mi / (3/12) h = 205 mi / (1/4) h = 205*4 mi/h=

= 820 mi/h

It is looks to high for speed of the truck,

probably time should be 3.12 h,

then

average speed = 205 mi / (3.12) h ≈ 65.71 mi/h.

That looks close to real life.