Chapter 7, Problem 16CR

To determine

To find: The percent of the number.

Answer to Problem 16CR

The percent of the number $90\%\text{ of }70$ is $63$ .

Explanation of Solution

Given information: Find the percent of the number $90\%\text{ of }70$ .

Calculation: Percent $(\%)$ means ‘out of $100$ ’ and when dealing with percents the word ‘of’ means ‘times or to multiply’.

Hence, $90\%$ can be written as $\frac{90}{100}$ .

Let, the number we are looking for is $x$ .

Let’s find the value of $x$ ,

  $\begin{array}{l}x=\frac{90}{100}\times 70\\ x=\frac{6300}{100}\\ x=63\end{array}$

Hence, The percent of the number $90\%\text{ of }70$ is $63$ .