Acme Container Corporation produces egg cartons that are sold to egg distributors. Acme has estimated this production function for its egg carton division:
Q = 25L^0.6 K^0.4
where Q = output measured in one thousand carton lots,
L = labor measured in person hours, and
K = capital measured in machine hours.
Acme currently pays a wage of $10 per hour and considers the relevant rental price for capital to be $25 per hour. Determine the optimal capital-labor ratio that Acme should use in the egg carton division.