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Andy estimated that he would need 78 feet of lumber for a tree house project. He later found that the actual amount of lumber needed was 67 feet. What was the percent error of Andy's estimation?

To calculate the percent of error, we use the formula [tex] (|\frac{Actual value-Estimated value}{Actual value}|)*100[/tex].

If we plug in the numbers from this problem, it looks like this:

[tex](| \frac{67-78}{67}|)*100[/tex]

[tex](| \frac{-11}{67}|)*100[/tex]

[tex](\frac{11}{67})*100[/tex]

[tex].1642*100[/tex]

16.42% is the percent error of Andy's estimation.

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WHOEVER HELPS GETS BRAINLIEST Andy estimated that he would need 78 feet of lumber for a tree house project. He later found that the actual amount of lumber needed was 67 feet. What was the percent error of Andy's estimation?

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WHOEVER HELPS GETS BRAINLIEST

Andy estimated that he would need 78 feet of lumber for a tree house project. He later found that the actual amount of lumber needed was 67 feet. What was the percent error of Andy's estimation?