At a waste sorting facility, the operations manager must decide between using two different input

waste streams, Stream A or Stream B$,$ for daily processing through the plant. The table below lists

the amounts of sorted materials such as plastics, metals, and paper each waste stream can contribute

per day of processing, along with the amount of landfill residue produced, which the manager is

trying to minimize. The facility is expected to sort at least $200$ units of paper, $960$ units of plastics,

and $40$ units of metals each month. How many days of processing Stream A $/$ Stream B should be

planned to ensure the facility meets the required monthly sorting targets while minimizing landfill

residue? How many days will it take to achieve the necessary output?