Fence Right is a firm that supplies and installs fence. Its output follows the production function
Q = 20L – 0.5L2; where L denotes labour hours and Q the length of the fence in feet. The firm
hires labour at a wage of $25 per hour.
Hint: MRPL = MRC
a) DD has received an offer to install 200 feet of fence for a price of $480. Should DD accept
b) What offer would be profitable if the company desires a price of $5 per foot of fence installed
(show all workings)?
Q = 20L – 0.5L2; w = $25 per hour. MRPL = MRC a. If Q = 200 feet and P = $480, then: 20L - 0.5L^2 = 200, L^2 - 40L + 400 = 0, (L - 20)^2 = 0, L = 20 workers. Total cost is: TC = P*L = 25*20 = $500 > $480, so DD should not accept the offer. b. MRPL = MRC and P = $5, then: MRPL = MPL*P, MRC = w, so: MP*P = w, Q'*5 = 25, 20 - L = 5, L = 15, so: Q = 20L - 0.5L^2 = 20*15 - 0.5*15^2 = 187.5 feet offer would be profitable.