Each coffee table produced by Kevin Watson Designers nets the firm a profit of $8. Each bookcase yields a $15 profit.​ Watson's firm is small and its resources limited. During any given production period ​(of 1 ​week)​, 9 gallons of varnish and 14 lengths of​ high-quality redwood are available. Each coffee table requires approximately 1 gallon of varnish and 1 length of redwood. Each bookcase takes 1 gallon of varnish and 2 lengths of wood.