6. (Nutrition Problem) A nutritionist advises an individual who is suffering from iron and vitamin-B deciency to take at least 2400 mg of iron, 2100 mg of vitamin B1 and 1500 mg of vitamin B2 over a certain period of time. Two vitamin capsules are suitable, Neuro-Iron and Sango-Iron. Each Neuro-Iron capsule costs P6 and contains 40 mg of iron, 10 mg of vitamin B1 and 5 mg of vitamin B2. Each Sango-Iron costs P8 and contains 10 mg or iron and 15 mg each of vitamins B1 and B2. What combination of each brand should the individual purchase in order to meet the minimum iron and vitamin requirements at the lowest cost? Objective: To minimize cost, 2 Decision Variables: Let x be the number of capsules of Neuro-Iron X be the number of capsules of Sango-Iron Objective Function: Minimize z = Constraints