Question

The population of Renton, WA, is about 101 920 people. Ten years ago, the population was about 91 000 people. By what percent did the population increase between ten years ago and now?

Answer 1

We can find the answer using the percent change formula:

`\begin{gathered} Percent_{\text{ }}change=\frac{New_{\text{ }}Value-Old_{\text{ }}value_{}}{Old_{\text{ }}value}*100 \\ \end{gathered}`

Where:

New Value = 101 920

Old value = 91 000

so:

`\begin{gathered} Percent_{\text{ }}change=(101920-91000)/(91000)*100 \\ Percent_{\text{ }}change=0.12*100 \\ Percent_{\text{ }}change=12 \end{gathered}`

answer: 12%