Two fragrances A and B are utilized to make perfumes Laughter and Joy. You need 3 g of fragrance A and 4 g of fragrance B to make 1 litre of Laughter. 1 litre of Joy needs 9 g of fragrance A and 6 g of fragrance B. At least 3 litres of Laughter requires to be made per week. At the starting of the particular week company has 27 g of fragrance A and 30 g of fragrance B. Consider x and y be number of litres of Laughter and Joy respectively which are produced per week. If profit on 1 l of Laughter is R30 and profit on 1 l of Joy is R50, state profit, P, in terms of x and y.