Answer:
0.7 miles per hour
Explanation:
Given: A truck traveled 205 miles in 312 hours.
To find: Average speed of the delivery truck.
Solution: We know that

Here, the distance traveled by the truck is 205 miles.
The time taken by the truck is 312 hours.
Now, to find the speed we need to convert the above equation in terms of speed. So, we have



Now, after rounding the speed to nearest tenth we have, speed of the truck as 0.7 miles per hour.
Hence, speed of truck is 0.7 miles per hour.