Question

A student estimates that it would take 3 hours to write a book report, but it actually took her 5 hours. What is the percent error?

Answer 1

40

Explanation:

5-3 2

------ ----- = 40%

5 5

Answer 2

Answer: 66.7

Explanation:

% error = error / actual value x 100

error = 5 -3

error = 2

Therefore :

% error = 2 /3 x 100

% error = 66.66666667

%error ≈ 66.7