Portsmouth Company makes upholstered furniture. Its only variable cost is direct materials. The demand for the company's products far exceeds its manufacturing capacity. The bottleneck (or constraint) in the production process is upholstery labor-hours. Information concerning three of Portsmouth's products appears below: Recliner Sofa Love Seat Selling price per unit Variable cost per unit Upholstery labor-hours per unit $ 1,242 $ 850 $ 1,865 $ 1,150 $ 1,690 $ 1,150 7 hours 13 hours 6 hours Required: 1. Portsmouth is considering paying its upholstery laborers hourly compensation, in addition to their usual salaries, to work overtime. Assuming that this extra time would be used to produce sofas, up to how much of an overtime rate per hour should the company be willing to pay to keep the upholstery shop open after normal working hours?