Our manager would like to mix two types of product in such a way that the contents of mixture contain at least 8 Units of C1 type and 10 units of C2 type. Product 1 contains 2 units/ton of C1 and 1 unit/ton of C2. At the same time, Product 2 contains 1 unit/ton of C1 and 2 units/ton of C2. With that, Product 3 contains 3 units/ton of C1 and 2 units/ton of C2. Our purpose is minimizing the cost, while different products hiding at different silos. I have to provide a reasonable narrative on the situation and build mathematical model. Do the sensitivity analysis and hand,graphical, computer( Excel) solution. Cost for now: C1 for 5 USD per unit/ton, C2 for 8 USD per unit/ton.