Question

Blake eats two bags of potato chips each day. Blake's hourly wage increases from $9 to $15, and he decides to stop eating generic chips and instead eats a name brand potato chip. Use the midpoint method to calculate Blake's income elasticity of demand for generic potato chips.

Answer 1

Answer:

-4 units

Explanation:

Using the midpoint method, Blake's income elasticity of demand for generic potato chips is given by the change in demand (D) multiplied by his average income (I), divided by the change in income multiplied by the average demand:

$E=\frac{\Delta D}{\Delta I}*\frac{I_{avg}}{D_avg}\\E=\frac{0-2}{15-9}*\frac{\frac{9+15}{2}}{\frac{2+0}{2} }\\E=-4\ units$

Blake's income elasticity of demand is -4 units.