knoebels amusement park in elysburg, pennsylvania, charges a lump-sum fee, l, to enter its crystal pool. it also charges p per trip down a slide on the pool's water slides. suppose that teenagers visit the park, each of whom has a demand function of p, and that seniors also vist, each of whom has a demand function of p. knoebels's objective is to set l and p so as to maximize its profit given that it has no (non-sunk) cost and must charge both groups the same prices. what are the optimal l and ploading...?
