Quantity of Marginal Quantity of Marginal
Good X/Wk Utility Good Y/Wk Utility
11200 11700
21000 21400
3 800 31100
4 600 4800
5 400 5500
6100 6200
Refer to the above table. If the price of Good X is $1, the price of Good Y is $2, and the consumer
has $13, the rational consumer will purchase
5 units of Good X and 4 units of Good Y.
6 units of Good X and 0 units of Good Y.
3 units of Good X and 4 units of Good Y.
1 units of Good X and 1 units of Good Y.
If someone complains that she doesn’t feel very well because she ate too much pizza, we would
conclude that the marginal utility of the last piece of pizza eaten was
The total utility of water is
lower than the total and marginal utility of diamonds.
higher than the total utility of diamonds, but the marginal utility of diamonds is higher.
lower than the total utility of diamonds, but the marginal utility is higher.
the same as the total utility of diamonds, but the marginal utilities are the same.
The marginal rate of substitution is
the additional satisfaction from consuming an additional unit of a good or service.
the change in the quantity of one good that just offsets a one unit change in the consumption
of another such that the total satisfaction remains constant.
positively related to the level of income.
the set of goods and services that are available to the consumer given his income.