A dartboard is divided into 5 concentric circles having radius of 2 cm, 3 cm, 4 cm, 5 cm and 6 cm. The prize amount for hitting the circle(starting from innermost) are Rs. 60, Rs. 50, Rs. 40, Rs. 30, Rs. 20 respectively. Every participants has to buy a ticket in order to be the part of the game. How much amount should the organizer of the game charge per ticket so as to ensure thet he will end up with no profit no loss situation?