21 is 30% of what number?

Question

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Answer 1

To find out what number 21 is 30% of, you can set up the equation:

$$21=0.30\times x$$

Where $x$ is the unknown number. To solve for $x$, you can rearrange the equation:

$$x=\frac{21}{0.30}$$

Now, calculate $x$:

$$x=\frac{21}{0.30}=70$$

Therefore, 21 is 30% of 70.

The answer is:

70