Answer: 31.25
Explanation:
Okie dokie, so if something is marked up by 20% it means, it is 120% the original number right?
So we can convert 120% into 1.2 to make solving this problem easier. :)
So if we want to find the original number, all we have to do is divide 37.5 by 1.2.
This gets us 31.25.