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If you take 80 percent of a number and get 420, then what is that number? In other words, you know that 80 percent of a number is 420 and you want to know what that initial number is.

To solve this problem you multiply 420 by 100 and then divide the total by 80 as follows: (420 x 100) / 80

When we put that into our calculator, we get the following answer:

525


Therefore, the answer to "420 is 80 percent of what number?" is 525, and you can also derive that 80 percent of 525 equals 420.

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