Answer:
The percentage of error is 14.71 %.
Step-by-step explanation:
Given:
Estimated time for completion of project is, [tex]ET=17\ h[/tex]
Actual time for completion of project is, [tex]AT=19\frac{1}{2}=\frac{39}{2}\ h[/tex]
Difference in error =[tex] AT - ET = \frac{39}{2}-17=\frac{39-34}{2}=\frac{5}{2}=2.5\ h[/tex]
Percentage in error = [tex]\frac{2.5}{17}\times 100=14.71\%[/tex]
Therefore, the percentage of error is 14.71 %
