In: Economics
A good’s demand is given by: P = 795 – 2Q. At P = 138, the point price elasticity is: Enter as a value (round to two decimal places if necessary).
Point price elasticity = (P/Q) x (∆Q/∆P)
Demand function =
P = 795 - 2Q
Q = 397.5 - 0.5P
Let price changes by $ 1
Q will change by -0.5 units
Therefore, ∆Q/∆P = -0.5/1
= - 0.5
At P = 138
138 = 795 - 2Q
Q = 328.5
Point Price elasticity at ( 138 , 328.5 ) is
(138/ 328.5) x ( -0.5)
= - 0.021
Therefore, demand is relatively inelastic.