Aatikah plans to buy books at a book fair. She thinks she will need $30.00 to purchase the books. She only spends $19.75. Find the percent error in her prediction.
Round your answer to the nearest whole number. (1 point)
The percent error is calculated by taking the absolute difference between the predicted value and the actual value, dividing it by the predicted value, and multiplying by 100.
The absolute difference between the predicted value ($30.00) and the actual value ($19.75) is $30.00 - $19.75 = $10.25.
To find the percent error, we divide the absolute difference ($10.25) by the predicted value ($30.00) and multiply by 100.
Percent error = ($10.25 / $30.00) * 100 = 34.17%.
Rounded to the nearest whole number, the percent error is 34%.