The answer to the question
You would move your point 24 up from the starting point then move it three down from the 24 so if you start at zero go to 24 then move it down to 21.
-x + 4 + 20x = 156
19x + 4 = 156
- 4. -4
19x = 152
19. 19
X = 8
Then, distance of route passes the beach = x
Let the distance of route that passes the park = x+2
So, their sum would be: x+x+2 = 2x+2
So, option C Is your answer.......