Question

Please help with the question below (please try to answer in maximum 1/5 minutes).

Answer 1

Given:

He thought he had purchased 7 folders.

He had only purchased 6.

To find:

The per cent error.

Explanaton:

According to the problem,

The predicted value is 7.

The actual value is 6.

Using the formula,

`\begin{gathered} Percent\text{ error }=(|Prediction-Actual|)/(|Actual|)*100 \\ =(|Prediction-Actual|)/(|Actual|)*100 \\ =(|7-6|)/(6)*100 \\ =(1)/(6)*100 \\ =16.66 \\ \approx17\% \end{gathered}`

Therefore, the percent error is 17%.

Final answer:

The percent error is 17%.