If a firm can sell 3,000 units of product
A
at
$10
per unit and 5,000 at
$8
, then: Formula:
E_(D)=%\Delta QD-:%\Delta P
where
%\Delta QD=(Q_(2)-Q_(1))-:(Q_(2)+Q_(1))
and
%\Delta P=(P_(2)-P_(1))-:(P_(2)+P_(1))
the price elasticity of demand is 2.25 . the price elasticity of demand is 0.44 . product
A
is an inferior good. product A is a complementary good.