I think of a number. I double it, then multiply it by 0.2. After I divide it by 0.1, then quadruple my answer. I get 16. What number did I start with?
One
I did all that work
For
Wow
+10 
I think of a number. I double it, then multiply it by 0.2. After I divide it by 0.1, then quadruple my answer. I get 16. What number did I start with?
