Answer:
-2.75 and inferior good
Step-by-step explanation:
The computation of the income elasticity of demand using the mid point method is shown below:
The computation of the price elasticity of demand using mid point formula is shown below:
= (change in quantity demanded ÷ average of quantity demanded) ÷ (percentage change in income ÷ average of income)
where,
Change in quantity demanded is
= Q2 - Q1
= 0 - 2
= -2
And, average of quantity demanded would be
= (0 + 2) ÷ 2
= 1
Change in income is
= M2 - M1
= $15 - $7
= $8
And, average of income is
= ($7 + $15) ÷ 2
= 11
So, after solving this, the income elasticity of demand is -2.75
And, the goods is inferior good as it has negative elasticity of demand