So what do you suppose that 90 plus YOUR 90=?
Maybe a little simpler. What did you bet? 100
How much of that made it into the pot? 90
How much is the total pot? 180
How much did you get when you won? 180
What did you start with? 90 (100-10%)
What did you end with? 180
What is 180 minus 90?______________(fill in the blank.)