Microeconomics 13th Edition by Russell Sobel, David Macpherson, Richard Stroup, James Gwartney

Exercise 4

A consumer is currently purchasing three pairs of jeans and five T-shirts per year. The price of jeans is $30, and T-shirts cost $10. At the current rate of consumption, the marginal utility of jeans is 60, and the marginal utility of T-shirts is 30. Is this consumer maximizing his or her utility? Would you suggest that he buy more jeans and fewer T-shirts, or more T-shirts and fewer jeans?