Satish wean to a hotal with his famili . They consume 20 idly , 9 dosa and 5 somasa and paid Rs. 208 . Mahesh went to the same hotal with his famili . they consume 16 idlies , 11 dosas and 9 somasa and paid Rs 232 .If one idly cost the same as somasa . Find the cost of one dosa .