This is a linear programmjng model question.

A farmer in Egypt owns 50 acres of land. He is going to plant each acre with cotton or corn. Each acre planted with cotton yields $400 profit; each with corn yields $200 profit. The labor and fertilizer used for each acre are given in the table below. Resources available include 150 workers and 200 tons of fertilizer. How much should the farmer be willing to pay for an additional worker? How much should the farmer be willing to pay for an additional ton of fertilizer