The production function for earthquake detectors \((Q)\) is given as follows:

\[ Q = 4K^{1/2}L^{1/2} \]

where \( K \) is the amount of capital employed and \( L \) is the amount of labor employed. The price of capital, \( P_K \), is $18, and the price of labor, \( P_L \), is $2.

Refer to Scenario 2.

Suppose that you receive an order for 60 earthquake detectors. How much labor will you use to minimize the cost of producing 60 earthquake detectors?