A producer has a production function Q= 5K0.7 L0.5 and buys K at $12 a unit and L at $9 a unit. What input combination will minimize the cost of producing 190 units of output, and hence determine the Total Cost?

A producer has a production function Q= 5K0.7 L0.5 and
buys K at $12 a unit and L at $9 a unit. What input combination will
minimize the cost of producing 190 units of output, and hence
determine the Total Cost?