Since it asks for the ratio of all the males to all the club members, you write the number of males, 11 the symbol : and then the number of club members total.
To find the amount of men in the club you subtract the amount of women (11) from the total amount of members (25). Since the answer asks for the amount of men to total amount of members the answer will be 14;25. Otherwise written as 14 to 25, 14/25.
