Question

Karen measures the width of a garden plot and records that it is 44.25 meters. Its actual width is 45.5 meters. What is the percent error in the measurement, to the nearest tenth of a percent?

Answer 1

Actual width:        45.5 m-----------------100%
Measured width:  44.25 m---------------- x%
45.5 : 44.25 = 100 : x
45.5 x = 4,425
x = 4,425 : 45.5 = 97.252
97.252% - 100% = - 2.747% ≈ - 2.7%
Answer: The percent error is - 2.7%.