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If you take 40 percent of a number and get 648, then what is that number? In other words, you know that 40 percent of a number is 648 and you want to know what that initial number is.

To solve this problem you multiply 648 by 100 and then divide the total by 40 as follows: (648 x 100) / 40

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

1620


Therefore, the answer to "648 is 40 percent of what number?" is 1620, and you can also derive that 40 percent of 1620 equals 648.

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