Let's say you work for a drug company that produces six

different prouducts at its plant. For each product, you need

labor and raw material. Row $4$ shows the hours of labor needed to produce

pound of each product, and row $5$ shows the pounds of raw material

needed to produce a pound of each product. For each drug, the price per pound is given

in row $6,$ the unit cost per pound is given in row $7,$ and profit contribution

per pound is given in row $9.$ Row $8$ shows the demand of each product.

This month, $4500$ hours of labor and $1600$ pounds of raw materials are available.

How can this company maximize its monthly profit $?$ solve in excel