Smith and Jones are stranded on a desert island. Each has in her possession some slices of ham (H) and cheese(c). Smith prefers to consume ham and cheese in fixed portions of 2 slices of cheese to each slice of ham. Her utility is given by Us= Min (10H, 5C). Jones on the other hand regards ham and cheese as perfect substitutes-she is always willing to trade 3 slices of ham for 4 slices of cheese, and her utility function is given by Uj+4h+3c. Total endowments are 100 slices of ham and 200 slices of cheese.

a.Suppose Smiths initial endowment is 40 slices of ham and 80 slices of cheese (Jones gets the remaining ham and cheese as her initial endowment). What mutually beneficial trades are possible in this economy and what utility levels will Smith and Jones enjoy from such trades?