lowest marginal utility?

15. Income effects depend on the income elasticity of demand for each good that you buy. If one of the goods

you buy has a negative income elasticity, that is, it is an inferior good, what must be true of the income

elasticity of the other good you buy?

Problems

16. Praxilla, who lived in ancient Greece, derives utility from reading poems and from eating cucumbers.

Praxilla gets 30 units of marginal utility from her first poem, 27 units of marginal utility from her second

poem, 24 units of marginal utility from her third poem, and so on, with marginal utility declining by three

units for each additional poem. Praxilla gets six units of marginal utility for each of her first three

cucumbers consumed, five units of marginal utility for each of her next three cucumbers consumed, four

units of marginal utility for each of the following three cucumbers consumed, and so on, with marginal
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