Aalkah plans to buy books at a book fair. She thinks she will need $30.00 to purchase the books. She only spends $19.76. Find the percent error in her prediction. Round your answer to the nearest whole number. (1 point)

Question

Aalkah plans to buy books at a book fair. She thinks she will need $30.00 to purchase the books. She only spends $19.76. Find the percent error in her prediction. Round your answer to the nearest whole number. (1 point)

O2

58%

O1%

O 52%

Answer 1

To find the percent error, we use the formula:

Percent Error = (|Predicted Value - Actual Value| / Actual Value) x 100

Given that Aalkah predicted she would spend $30.00 on books but actually spent $19.76, we can calculate the percent error as follows:

Percent Error = (|30.00 - 19.76| / 19.76) x 100
Percent Error = (10.24 / 19.76) x 100
Percent Error ≈ 0.519 x 100 ≈ 52

Therefore, the percent error in Aalkah's prediction is approximately 52%.

Answer 2

To find the percent error, we need to compare the difference between Aalkah's prediction ($30.00) and the actual amount she spent ($19.76) to her prediction, and then express it as a percentage.

The formula to find percent error is:

Percent Error = (|Predicted Value - Actual Value| / Predicted Value) x 100

Using the given values:
Predicted Value = $30.00
Actual Value = $19.76

Plugging the values into the formula:
Percent Error = (|30.00 - 19.76| / 30.00) x 100
= (10.24 / 30.00) x 100
= 0.3413 x 100
= 34.13

Rounding the answer to the nearest whole number, the percent error in Aalkah's prediction is 34%.

Answer 3

To find the percent error in Aalkah's prediction, we need to calculate the difference between her predicted amount and the actual amount she spent, and then express that difference as a percentage of her predicted amount.

First, let's calculate the difference:
Actual amount spent = $19.76
Predicted amount = $30.00

Difference = Predicted amount - Actual amount spent
Difference = $30.00 - $19.76
Difference = $10.24

To express this difference as a percentage of the predicted amount:
Percent Error = (Difference / Predicted amount) x 100

Percent Error = (10.24 / 30.00) x 100
Percent Error = 0.3413 x 100
Percent Error ≈ 34.13

Rounding the answer to the nearest whole number, the percent error in Aalkah's prediction is approximately 34%. Therefore, the correct answer is option O2.