Solve Percent Problems with Proportions Quick Check
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)
58%
To find the percent error, we need to determine the difference between the predicted amount and the actual amount spent, and then divide that by the predicted amount.
Difference = $30.00 - $19.75 = $10.25
Percent error = (Difference / Predicted amount) * 100
Percent error = (10.25 / 30) * 100
Percent error ≈ 34.17
Rounding to the nearest whole number, the percent error is 34%.