Rohit has some 50 paise coins, some Rs. 2 coins, some Re. 1 coins and some Rs 5 coins. The value of all coins is Rs 50. Number of Rs. 2 coins is 5 more than the Rs. 5 coins. 50 paise coins are double the number of Re. 1 coins. The value of 50 paise coins and Re. 1 coins is Rs. 26. How many Rs. 2 coins does he have?