#questionFrame-it Ltd is a manufacturer of metal picture frames. The firm''s two product lines are designate S (small frames: 12 x18 cm) and L (large frames: 20 x 25 cm). The primary raw materials are flexit metal strips and 23 cm by 60 cm glass sheets. Each S frame requires a 2/3 metre metal strip; an L frame requires a 1 metre strip. Allowing for normal breakage and scrap glass, Frame-it can get either four S frames or two L frames out of a glass sheet. Other raw materials, such as cardboard backing, are insignificant in cost and are treated as indirect materials...