Question

Joan is buying a curtain for a window. She measured the width as 44.25 inches. The actual width is 43.50 inches. What is the approximate percent of error?

A) 0.75%
B) 1.69%
C) 0.16%
D) 1.72%

Answer 1

To find the approximate percent of error, subtract the actual value from the measured value, take the absolute value of the difference, divide it by the actual value, and multiply by 100.

Step-by-step explanation:

To find the approximate percent of error, we can use the formula:

Percent of Error = (|Actual Value - Measured Value| / Actual Value) * 100

Given that Joan measured the width as 44.25 inches, which is higher than the actual width of 43.50 inches, we can plug in the values into the formula:

Percent of Error = (|43.50 - 44.25| / 43.50) * 100

Percent of Error = (0.75 / 43.50) * 100

Percent of Error ≈ 1.72%