We have the relationship between inches and miles is:
1 inch to 5 miles.
The park has an actual area of:
Now, to make the conversion to inches, we need to consider that 1 inch represent 5 miles. Thus:
We squared this amounts, if 1 inch is 5 miles, 1 inch squared will be equal to 5 squared which is 25.
Now we divide 75 miles squared by 25, to know how many inches squared will the park represent on the map:
Answer: the area of the park on the map will be 3 inches squared.