5:11 is the ratio of those who completed in the freestyle to those who didn't. It would not be 5:16 because 5 of the members from the 16 members did the freestyle. 16-5 equals 11. 5(Men who did freestyle):11(Men who didn't do freestyle)
Your answer is 5:11.
5: (16 - 5)
= 5:11
Answer: 5:11
