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If you take 40 percent of a number and get 642, then what is that number? In other words, you know that 40 percent of a number is 642 and you want to know what that initial number is.

To solve this problem you multiply 642 by 100 and then divide the total by 40 as follows: (642 x 100) / 40

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

1605


Therefore, the answer to "642 is 40 percent of what number?" is 1605, and you can also derive that 40 percent of 1605 equals 642.

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