Question

high school the high school graduating class of 2010 was 260 people . 5 years later the high school graduating class was 320 people. By approximately what percentage did the high school graduating class change ? ​

Answer 1

Approximately 23%

Explanation:

we know that

The high school graduating class of 2010 was 260 people

5 years later the high school graduating class was 320 people

In this problem

260 people represent the 100%

so

using proportion

Find out what percentage represent the difference (320-260)=60 people

Let

x -----> the percentage

`(260)/(100\%)=(60)/(x)\\\\x=100\%(60)/260\\\\x=23.08\%`