Mia and Robert signed up to walk in a 5K walk/run race. They predict it will take them 60 minutes to complete the race. Mia and Robert finish the race in 53 minutes. What is the percent error?
Round to the nearest tenth.
To calculate the percent error, we use the formula:
Percent Error = |(Predicted Time - Actual Time) / Predicted Time| * 100
Plugging in the values:
Predicted Time = 60 minutes
Actual Time = 53 minutes
Percent Error = |(60 - 53) / 60| * 100
Percent Error = |7 / 60| * 100
Percent Error = 0.1167 * 100
Percent Error = 11.7%
Therefore, the percent error is 11.7%.