Question

Anson estimated he would need 17 hours to complete his science project. He actually needed 19 1 2 hours. What was his percent error?

Answer 1

Answer:

The percentage of error is 14.71 %.

Step-by-step explanation:

Given:

Estimated time for completion of project is, $ET=17\ h$

Actual time for completion of project is, $AT=19\frac{1}{2}=\frac{39}{2}\ h$

Difference in error =$AT - ET = \frac{39}{2}-17=\frac{39-34}{2}=\frac{5}{2}=2.5\ h$

Percentage in error = $\frac{2.5}{17}\times 100=14.71\%$

Therefore, the percentage of error is 14.71 %