Aatikah plans to buy books at a book fair. She thinks she will need $30.00 purchase the books. She only spends $19.75. Find the percent error in her prediction. Round your answer to the nearest whole number.
Options:
58%
1%
2%
52%
To find the percent error in Aatikah's prediction, we need to compare her predicted value ($30.00) with the actual value she spent ($19.75).
The formula for percent error is:
Percent Error = |(Predicted Value - Actual Value) / Actual Value| * 100
Substituting the values we have:
Percent Error = |(30.00 - 19.75) / 19.75| * 100
Calculating the numerator:
30.00 - 19.75 = 10.25
Calculating the denominator:
|10.25 / 19.75| * 100 = 52.083...
Rounding off to the nearest whole number:
52%
Therefore, the correct answer is 52%.
To find the percent error, we need to find the difference between the predicted value and the actual value, and then divide by the predicted value.
The predicted value is $30.00 and the actual value is $19.75.
The difference is $30.00 - $19.75 = $10.25.
To find the percent error, we divide the difference by the predicted value and multiply by 100:
Percent error = ($10.25 / $30.00) * 100% ≈ 34.17%
Rounding to the nearest whole number, the percent error is 34%.
None of the given options match this result.
To find the percent error, you can use the formula:
Percent Error = (|Predicted Value - Actual Value| / Actual Value) x 100
In this case, the predicted value is $30.00 and the actual value is $19.75. Plugging these values into the formula, we get:
Percent Error = (|30.00 - 19.75| / 19.75) x 100
Calculating this, we find:
Percent Error = (10.25 / 19.75) x 100 ≈ 51.9
Rounding this to the nearest whole number, the percent error in Aatikah's prediction is 52%.