20 of what number is 40?

Question:

20% of what number is 40?

Working with Percentages:

Here we will find out an unknown value such that when a known percentage (20%) is taken of this value, it simplifies to a known result (40). In order to solve this, we can use simple algebraic techniques such as multiplication and division.

The answer is 200. To start this equation, we know that 20% of an unknown number is 40. We would like to know what this number is.

To start, convert...

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