a hardware manufacturing company makes three items: screwdrivers, chisels, and putty knives. it takes 3 hours of labor per carton to produce screwdrivers, 4 hours of labor per carton to produce chisels, and 5 hours of labor per carton to produce putty knives. each carton of screwdrivers costs $15 to produce, each carton of chisels costs $12, and each carton of putty knives costs $11. the profit per carton is $5 for screwdrivers, $6 for chisels, and $5 for putty knives. if the company has 2200 hours of labor and $8500 in operating funds available per week, how many cartons of each item should it produce to maximize profit? (round your answers to the nearest carton.)