Chapter 12, Problem 17QC

To determine

To find: the percent of the shoppers which age were under $21$ .

Answer to Problem 17QC

The percent of the shoppers which age were under $21$ is $35\%$ .

Explanation of Solution

Given information:

At the mall, $700$ of the $2000$ people shopping were under the age of $21$ .

Calculation: to find the percent first divide the number of shoppers whose age was under $21$ by the total shoppers and then multiply the fraction by $100$ and simplify,

  $\begin{array}{l}\frac{700}{2000}=\frac{700}{2000}\left(100\right)\text{ [multiply by 100]}\\ \frac{700}{2000}=\frac{70000}{2000}\text{ [multiply]}\\ \frac{700}{2000}=35\%\text{ [divide]}\end{array}$

Thus, the percent is $35\%$ .