Question

If nine of every 11 trick-or-treaters that came to your house last Halloween were dressed as pirates what proportion of trick-or-treaters were not dressed as pirates

Answer 1

Answer: Ratio is 2:11

Explanation:

So your ratio of pirates to non-pirates would be 9:11

So you subtract number of pirates from total trick-or-treaters and get 2.

So the proportion of non-pirates would be 2:11.

Answer 2

11 - 9 = 2 trick-or-treaters out of 11 were not dressed as pirates so the proportion is 2/11.