A food is manufactured by refining raw oils and blending them together. The raw oils are of two categories. Each oil may be purchased for immediate delivery $($January$)$ or bought on the futures market for delivery in a subsequent month. Prices at present and in the futures market are given below in $(/$ton$)$A food is manufactured by refining raw oils and blending them together. The raw oils are of two categories. Each oil may be purchased for immediate delivery $($January$)$ or bought on the futures market for delivery in a subsequent month. Prices at present and in the futures market are given below in $(/$ton$)$A food is manufactured by refining raw oils and blending them together. The raw oils are of two categories. Each oil may be purchased for immediate delivery $($January$)$ or bought on the futures market for delivery in a subsequent month. Prices at present and in the futures market are given below in $(/$ton$)$