If the co-operative (from the previous question) has the greatest number of members possible (with a minimum of Tk.240 contribution per member) and all members except one paid exactly Tk.240, then how much did the member who paid higher then the rest pay?

প্রশ্নঃ If the co-operative (from the previous question) has the greatest number of members possible (with a minimum of Tk.240 contribution per member) and all members except one paid exactly Tk.240, then how much did the member who paid higher then the rest pay?