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lyudmila [28]
3 years ago
15

The high school graduating class of 2010 was 260 people. Five years later the high school graduating class was 320 people. By ap

proximately what percentage did the high school graduating class change?
Mathematics
1 answer:
jeka943 years ago
3 0

Answer:

The high school graduating class changed by approximately 23%

Step-by-step explanation:

we have

The high school graduating class of 2010 was 260 people

Five years later the high school graduating class was 320 people.

we know that

260 people represent the 100%

so

The difference is (320-260)=60 people

using proportion

Find out what percentage represent 60 people

Let

x ----> the percentage that represent 60 people

\frac{260}{100\%}=\frac{60}{x}\\\\x= 100\%(60)/260\\\\x=23.1\%

therefore

The high school graduating class changed by approximately 23%

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