janetta produces bratwurst using two inputs, labor and capital. her production process has the production function q=2l^0.5k^0.5, assume she wants to produce q=1500, price for labor is 15,price of capital is 30. write out the equation for the isocost curve that janetta faces
Cost is minimized when (MPl / MPk) = w/r = 15/30 = 1/2
MPl = q/l = 2 x 0.5 x (k/l)0.5
MPl = q/l = 2 x 0.5 x (l/k)0.5
MPl/MPk = k/l = 1/2
l = 2k
Substituting in production function with q = 1500,
2 x (2k)0.5 x l0.5 = 1500
20.5 x l0.5 x l0.5 = 750
l = 530.33
k = l/2 = 265.17
Total cost (C) = wl + rk = 15 x 530.33 + 30 x 265.17 = 7954.95 + 7954.95 = 15909.9
So,
Equation of isocost line:
15909.9 = 15l + 30k
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