Drugco produces three drags, A, B, and C, and can sell these drugs in unlimited
quantities at unit prices $8, $70, and $100, respectively. Producing a unit of A
requires one hour of labor. Producing a unit of B requires two hours of labor and
two units of A. Producing a unit of C requires three hours of labor and one unit
of B. Any product A that is used to produce B cannot be sold, and any product B
that is used to produce C cannot be sold. A total of 40 hours of labor are available.
Drugco wants to use LP to maximize its sales revenue.