The total cost for a family to buy concessions at the movie theater depends on the cost in dollars of one large drink d, one large popcorn p, and one box of candy c. The total cost of
2 large drinks, 2 large popcorns, and 1 box of candy is $26.75. The total cost of 1 large drink,
1 large popcorn, and 1 box of candy is $15.25. The total cost of 3 large drinks, 2 large
popcorns, and 2 boxes of candy is $35.75. Determine the cost of each item.