Answer:
18%
Step-by-step explanation:
First you have to figure that it sounds confusing but. What you have to do is that 171 is 189 LESS than from one place to another. So just do : 189-171= 18. And then you know 18.
Each number has a factor of 2, so divide each number by 2, giving you 2:11:15. You can't divide by anything else because 2, 11, and 15 have no factors in common.
