Suppose that when the average college student’s income is $10,000 per year, the annual quantity demanded of patty’s pizza is 50 and the annual quantity demanded of sue’s subs is 80. suppose that when the price of patty’s pizza increases from $8 to $10 per pie, the quantity demanded of sue’s subs increases from 80 to 100. suppose also that when the average student’s income increases to $12,000 per year, the annual quantity demanded of patty’s pizza increases from 50 to 60. using the midpoint method, what is the income elasticity of demand for pizza and what does the value indicate about the demand for pizza.

The income elasticity of demand for Patty's Pizza is 1. Positive income elasticity shows that Pizza is a normal good.

Explanation:

The annual income of the student's is $10,000.

The annual quantity demanded for patty's pizza is 50 units.

When the income increases to $12,000, the quantity demanded will also increase to 60 units.

There is a positive relationship between the quantity demanded of pizza and income level.

This indicates that pizza is a normal good.

The income elasticity of pizza is 1, the solution is given in the figure below:

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