Answer
600
Explanation:
Here is the formula/format:
Part %
------ = --------
Whole 100
We are trying to find the "whole" in this case, so I did:
330 55
------- = ------- (this says that 55% of the number we are looking for is 330)
x 100
Then, I cross multiplied and got: 55x= 33,000
From there, I divided 33,000 by 55 (inverse operations) to get x = 600.
I hope this helps! :)