ECON 1100 Lecture Notes - Lecture 12: Toffee, Cashew, Marginal Utility
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Marginal utility for cashew / price of cashew. Let"s find candidate combinations of toffee and cashews (summary table from previous two tables) Mu / price of toffee mu/ price of cashew. Criteria 1: mu/price of toffee = mu/price of cashew. Criteria 2: requires that the consumer should be on budget. Candidate 1: buy 6 toffee and 2 cashew = 6(1) + 2(5) = 16. Candidate 2: buy 7 toffee and 4 cashew = 7(1) + 4(5) = 27. Therefore, 6 toffee and 2 cashew is an inferior combination (16$ not equal 27$). The consumer can improve by using all of his/her income. In conclusion, the consumer should purchase 7 units of toffee and 4 units of cashew to maximize their utility subject to the consumers limited income of 27$, and subject to the prices of the two goods, toffee and cashews. So far, we assumed that prices of toffee and cashew are fixed.