Attica plans to buy books at the book fair she think she will need $30 to purchase the books she only spends $19.75 find the percent error in her prediction round your answer to the nearest whole number
To find the percent error, we need to calculate the difference between the predicted amount and the actual amount, and then express it as a percentage of the predicted amount.
Predicted amount: $30
Actual amount spent: $19.75
Difference = Predicted amount - Actual amount spent
Difference = $30 - $19.75 = $10.25
Percent error = (Difference / Predicted amount) * 100
Percent error = ($10.25 / $30) * 100
Percent error ≈ 34.17%
Rounded to the nearest whole number, the percent error is 34%.