Answer:
The diner is 175 miles from Clark
Explanation:
If the Planet Diner is halfway between Lutherville and Otisburg, it means that it is at the midpoint of the distance between these two places. To find out how far the Planet Diner is from Clark, you can calculate the average of the distances from Clark to Lutherville and from Clark to Otisburg:
Distance from Clark to Lutherville: 150 miles
Distance from Clark to Otisburg: 200 miles
Average distance = (150 miles + 200 miles) / 2 = 350 miles / 2 = 175 miles
So, the Planet Diner is 175 miles from Clark.