$48$ hours of labor and $120$ units of lumber. Wren houses yield a profit of $$6$ each and bluebird houses yield a profit of $$15$ each.

The aim of the objective function for William should be to Maximize the objective value.

The optimum solution is:

Number of wren houses to be produced $={8\mathrm{.}40}^{\text{'}}($round your response to two decimal places$).$

Number of bluebird houses to be produced $=($round your response to two decimal places$).$