Q. Two consumers Jorge and Admen, together own 1,000 baseball cards and 5,000 Pokémon cards. Let xR denote the quantity of baseball cards owned by Jorge and yR denote the quantity of Pokémon cards owned by Jorge. Similarly, let xD denote the quantity of baseball cards owned by Admen and yD denote the quantity of Pokémon cards owned by Admen. Assume, further, that for Jorge, MRSRx,y = yR/xR, while for Admen, MRSDx,y = yD/2xD. Finally, Assume xR = 800, yR = 800, xD = 200, and yD = 4,200.