8. Consider a Firm producing a given output in the long run; the inputs employed in production are labour L, which costs w > 0 per unit, and capital K, which costs r > 0 per unit. The Firm produces a quantity Q according to the following production function: Q(K, L) = 4K/3 L²/3. Suppose the Firm's target is to produce 1,000 (Q = 1,000). (a) Find the cost-minimising combination of inputs K* and L' when w = 160 and r = 80, then compute the corresponding long-run cost of production. (b) Suppose that the rental price of capital decreases to w' 20. Find the new cost-minimising input combination. (c) Use your answers to points a) and b) to calculate the firm's price elasticity of demand for capital over this range of prices (rounded to two digits).
8. Consider a Firm producing a given output in the long run; the inputs employed in production are labour L, which costs w > 0 per unit, and capital K, which costs r > 0 per unit. The Firm produces a quantity Q according to the following production function: Q(K, L) = 4K/3 L²/3. Suppose the Firm's target is to produce 1,000 (Q = 1,000). (a) Find the cost-minimising combination of inputs K* and L' when w = 160 and r = 80, then compute the corresponding long-run cost of production. (b) Suppose that the rental price of capital decreases to w' 20. Find the new cost-minimising input combination. (c) Use your answers to points a) and b) to calculate the firm's price elasticity of demand for capital over this range of prices (rounded to two digits).
Chapter10: Cost Functions
Section: Chapter Questions
Problem 10.3P
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