High Point Custom Cabinetry $($HPCC$)$ specializes in two$-$ and three$-$drawer

custom made file cabinets, which generate $$10$ and $$15$ worth of profit,

respectively, for each unit sold. It takes $2$ hours of labor to create a

two$-$drawer cabinet, and $3$ hours of labor to generate a three$-$drawer

cabinet, and the company has a weekly operating capacity of $1300$ hours

of labor. The demand for the two$-$drawer model is up to $600$ cabinets per

week, and the demand for the three$-$drawer model is up to $400$ per week,

but this includes a standing order for $100$ three$-$drawer units$/$week from a

major national retail chain.