Instructions: Move the slider at the bottom of the diagram to change the quantity consumed for all the available quantities on the total utility and marginal utility graphs. a) What is the total utility of the first unit consumed? utils. b) What is the marginal utility of the first unit? utils. c) What is the total utility of the first two units consumed? utils. d) What is the marginal utility of the second unit? utils. e) As the quantity consumed increases, the total utility is (Click to select) v while marginal utility is (Click to select) units. What is the f) If this good is available for $0 (a free good), what is the maximum amount an individual would consume? marginal utility of this last unit? | utils.

. TOTAL AND MARGINAL UTILITY E UTILITY CALCULATIONS Reset Total Utility Quantity Consumed Total Marginal Utility 70 Utility 60 50 22 40 1 22 30 18 20 2 40 10 14 3 4 6 8 3 54 Quantity Consumed Marginal Utility 10 20 4 64 6. 10 70 4 6. -10 72 -20 -2 Quantity Consumed 70 Quantity Consumed -6 8 64 2. 4 6 8

Suppose you go to Trader Joe's to buy fruit for the week. You only like apples (A) and bananas (B) and your weekly fruit budget is $11. When you arrive at Trader Joe's you notice that the price of an apple is $1.00 and the price of a banana is $0.25. QUESTION #1: How many apples and bananas should you buy? QUESTION #2: When you have found the answer, draw a diagram that shows the outcome. Step #1. Determine your preferences. Let's suppose that your preferences can be represented by the following utility function: U(A, B) = AªBß = A0.40 B0.60 FYI: This utility function is known as a Cobb-Douglas utility function. It is the most commonly used function used in economics! The reason we like it so much is that it has: 1. Constant returns (double your consumption of A and B and your utility doubles); a + B = 1 2. Diminishing marginal utility (the extra utility gained from consuming A (or B) decreases as you consume more of the A good (or B good); a 0.40); B > a. Step #2: Determine your…

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