Food X contains 6 units of vitamins A and 7 units of vitamins B per gram and it costs 12 paise per gram.Food Y contains 8 units of vitamin A and 12 units of vitamins B per gram and it costs 20 paise per gram.Daily minimum requiremrnts of vitamin A and vitamin B are 100 units and 120 units respectively.Formulate the LPP mathematically so that the cost is to be minimized.