Mark and Matthew side up to walk in a 5K walk/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 compare the predicted time of 60 minutes to the actual time of 53 minutes.
First, find the absolute difference between the predicted time and the actual time:
Absolute difference = |predicted time - actual time|
= |60 - 53|
= 7
Next, divide the absolute difference by the predicted time and multiply by 100 to find the percent error:
Percent error = (absolute difference / predicted time) * 100
= (7 / 60) * 100
= 11.7
Rounded to the nearest tenth, the percent error is 11.7%.