You can put this solution on YOUR website! Whenever you are given questions like this, the best thing to first figure out is what you are trying to solve for. In our case, we want to find the number.
We will let this number be .
Now, using the question we can make an equation:
Now, the only thing left to do is solve for x (isolate the variable):
Hopefully this helps:) Let me know if you are unsure of any of the steps that were taken:)