There are two types of fertilisers F1 and F2 F1 consists of 10% nitrogen and 6%
phosphoric acid and F2 consists of 5% nitrogen and 10% phosphoric acid After
testing the soil conditions, a farmer finds that she needs atleast 14 kg of nitrogen
and 14 kg of phosphoric acid for her crop If F1 costs Rs 6/kg and F2 costs
Rs 5/kg, determine how much of each type of fertiliser should be used so that
nutrient requirements are met at a minimum cost