Consider Ben & Jerry buying two goods: Ice cream (x) and T-shirt (y). Initially, Ben has 12 units of ice cream and 9 units of T-shirt; Jerry has 8 units of ice cream and 11 units of T-shirt (so a total of 20 ice creams and 20 T-shirts). Their preferences (utility functions) for the two goods are: UBen = 0.15Qx* QY UJerry 0.08Qx* QY where Qx represents units of ice cream, and Qy represents units of T-shirt. Does the allocation of ice cream and T-shirt between Ben and Jerry satisfy the exchange efficient condition? (a) (b) If not, find a mutually beneficial trade between Ben and Jerry, and indicate who would trade for what. [hint: find between how many units of ice cream Ben can trade to Jerry in exchange for 1 T-shirt that would make them both better off]