Aatikah plans to buy books for a book fair. She thinks she will need $30 to purchase the books. She only spends $19.75. Find the percent error in her prediction.
The actual amount spent is $19.75 and the predicted amount was $30.
To find the percent error, we first find the difference between the predicted amount and the actual amount:
$30 - $19.75 = $10.25
Then we divide this difference by the predicted amount and multiply by 100 to find the percent error:
($10.25 / $30) * 100 ≈ 34.17%
Therefore, the percent error in Aatikah's prediction is approximately 34.17%.