Mark and Matthew signed 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.

Question

Answer: 13.2%
describe as a 7th grader simply and short

Answer 1

To find the percent error, we first need to know how much they were off from their predicted time. They predicted 60 minutes but actually finished in 53 minutes.

1. Calculate the difference: 60 minutes - 53 minutes = 7 minutes.

2. Find the percent error: We take the difference (7 minutes) and divide it by the predicted time (60 minutes), then multiply by 100 to get a percentage.

   \[ \text{Percent Error} = \left(\frac{7}{60}\right) \times 100 \approx 11.67% \]

3. Round it: When we round 11.67% to the nearest tenth, we get 11.7%.

So, the percent error is about 11.7%.

Answer 2

can you simplify it more

Answer 3

Sure! Here’s a simpler way to explain it:

1. Find the difference: They thought it would take 60 minutes, but it only took 53 minutes. So, they were 7 minutes faster.

2. Calculate the percent error: To find the percent error, do this:

   • Divide the difference (7 minutes) by the predicted time (60 minutes).
   • Multiply that by 100 to get a percentage.

   So, it looks like this: \[ \frac{7}{60} \times 100 \approx 11.67% \]

3. Round it: When you round 11.67% to the nearest tenth, you get 11.7%.

So, the percent error is 11.7%.