Tom and Jerry are room mates. They spend a total of 80 hours a week together in their room. Tom likes loud music. eyen when he sleeps. His utility function is UT(CT1M) = CITFM} where CT is the number of cookies he eats per week and M is the number of hours of loud music per week that is played while he is in their room. Jerry hates all kinds of music. His utility function is M2 UJZCJf. Eyery week, Tom and Jerry each get 12 chocolate chip cookies sent from home. They haye no other source of cookies. We can describe this situation with a box that looks like an Edgeworth box. The box has cookies on the horizontal axis and hours of music on the yertical axis. Let the bottom-left corner be the origin for Tom, and the bottom-right corner be the origin for Jerry. Suppose the dorm's policy is I'rock-n-roll is good for the soul." Thus, M=B in the initial endowment. Consider a trade between Tom and Jerry: Jerry giyes Tom one cookie for reducing one hour of music. Then the change in Jerry's utility will be