Answer:
102 miles per hour.
Step-by-step explanation:
We have been given that a car travels at a steady speed and takes 5 hours to travel 510 miles.
To find the average speed of car, we will divide total distance traveled by total time taken.
\(\text{Average speed of car}=\frac{510\text{ Miles}}{5\text{ Hour}}\)
\(\text{Average speed of car}=\frac{102\text{ Miles}}{\text{ Hour}}\)
Therefore, the average speed of car is 102 miles per hour.