3. (15 points) All values are hypothetical. The stall next to Emma sells ground coffee beans from Baguio. The stall sells 3 coffee blends, and each blend comes in a 500g foil pack. The blends use a combination of Coffee Bean 1, Coffee Bean 2 and Coffee Bean 3. We are given the following data: Demand per week Cost Per Kilo Blend 1 Coffee Coffee Coffee Bean 1 Bean 2 Bean 3 P500 P650 P300 At least 40% At most 10% At least 40% Bean 1 Bean 2 Bean 3 At least 70% At least 20% Bean 1 Bean 2 200 packs Blend 2 240 packs At most 50% Bean 1 Blend 3 At least 60% At most 20% Bean 2 Bean 3 300 packs Formulate this as a linear programming problem to determine the number of kilos of coffee beans that the stall should buy to minimize cost