Suppose that when household income in a city rises by 2%, and the price of good X remains unchanged, the quantity demanded of good X decreases by 15%. Then, in this city, the income elasticity of demand for good X is (7.50, -7.50, -0.13, 0.13) , and you know that good X is (an inferior good, a normal good) .

-7.50; Inferior good

Step-by-step explanation:

Income elasticity of demand shows the relationship that exists between the quantity demanded of a good and its price. It is calculated as the % change in quantity demanded divided by the % change in price.

From the question, when income increases by 2%, the quantity demanded falls by 15%, then the income elasticity of demand is:

-15% ÷ 2% = -7.50

Good X is an inferior good. Inferior good have a negative income elasticity of demand. As the income of q consumer increases, the quantity demanded reduces.

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step-by-step explanation: