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

Answer:The high school graduating class changed by approximately 23%Step-by-step explanation:we haveThe high school graduating class of 2010 was 260 peopleFive years later the high school graduating class was 320 people.we know that260 people represent the 100% soThe difference is (320-260)=60 peopleusing proportionFind out what percentage represent 60 people Letx ----> the percentage that represent 60 people[tex]\frac{260}{100\%}=\frac{60}{x}\\\\x= 100\%(60)/260\\\\x=23.1\%[/tex]thereforeThe high school graduating class changed by approximately 23%