Mark and Matthew signed up to walk in a 5k race/run race. They predict it will take them 60 minutes to complete the race. Mark and Matthew finished the race in 53 minutes. What is the percent error? Round to the nearest tenth.
To find the percent error, we need to find the difference between the predicted time and the actual time, and then divide by the predicted time:
Difference = 60 minutes - 53 minutes = 7 minutes
Percent error = (Difference / Predicted time) * 100%
Percent error = (7 minutes / 60 minutes) * 100% ≈ 11.7%
Rounded to the nearest tenth, the percent error is 11.7%. Answer: \boxed{11.7}.