Chapter 7.7, Problem 43SR

To determine

To Find:What percent of 400 is 12?

Answer to Problem 43SR

  $12$ is $3\%\text{ of 400}$ .

Explanation of Solution

Given information:

Number 400 & 12.

Concept and Formula Used:

Concept of percentage. $x\%=\frac{x}{100}$

Calculation:

Let $12$ is $x\%\text{ of 400}$

Therefore,

  $\begin{array}{l}x\%\text{ of 400}=12\\ \frac{x}{100}\times 400=12\\ x=\frac{12\times 100}{400}\\ x=3\end{array}$

Conclusion:

  $12$ is $3\%\text{ of 400}$ .