Pear produces low-budget cars. Each car is sold for

$7900. The raw material in a car costs $5000. Labor time and robot time are needed to produce cars. A worker can do the needed labor on, at most, 100 cars per month; a robot can complete the needed work on, at most, 200 cars per month. Initially, Pear has 4 workers. Each worker receives a monthly salary of

$6000. It costs $2500 to hire a worker and $1000 to fire a worker. Hired workers are fully productive during the month they are hired. Robots must be bought at the beginning of month 1 at a cost of $15,000 per robot. The (assumed known) demand for cars is listed in the file P04_98.xlsx. At the end of each month, Pear incurs a holding cost of $200 per car.

How can Pear maximize the profit earned during the next 6 months?