Answer :
Answer:
The income elasticity of demand for generic potato chips is -2.75 and as the income elasticity of demand for generic potato chips is negative, generic potato chips is an inferior good
Explanation:
With increase in income of Blake from $7(I1) hourly wage to $15(I2) hourly wage, quantity demanded for generic potato chips falls from 2 bags (Q1) to 0 (Q2).
Income elasticity of demand for generic potato chips = (Q2-Q1)/[(Q1+Q2)/2] / (I2-I1)/[(I1+I2)/2]
= (0-2)/[(0+2)/2]/ ($15-$7)/[($15+$7)/2]
= (-2/1) / (8/11)
= -11/4
= - 2.75
Therefore, The income elasticity of demand for generic potato chips is -2.75 and as the income elasticity of demand for generic potato chips is negative, generic potato chips is an inferior good.