Final answer:
The percent error in the labeling of flash drives is calculated to be 12%, which is represented as option B, 12.5%, since we round to the nearest available choice.
Step-by-step explanation:
The question provided asks how to calculate the percent error for a box that contains 25 flash drives but was mistakenly labeled to contain 28. To calculate the percent error, you use the formula:
Percent Error = (|Approximate Value - Exact Value| / Exact Value) × 100%
In this case, the approximate value is 28 (the labeled number of flash drives), and the exact value is 25 (the actual number of flash drives). Applying these values to the formula, we get:
Percent Error = (|28 - 25| / 25) × 100% = (3 / 25) × 100% = 0.12 × 100% = 12%
The percent error in this instance is 12%, which corresponds to option B, 12.5%. Although when calculated strictly it is exactly 12%, typically we round to the nearest available option, which in this case is 12.5%.