Question

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

Answer 1

Answer:

The Percent Error for her estimate   = 66.66%

Step-by-step explanation:

The initial estimate time to write a book = 3 hours

The final estimate to write a book = 5 hours

⇒  The Error in the estimation = Final estimate - Initial Estimate

                                                   =  5 hours  - 3 hours  = 2 hours

Now, $\textrm{Percentage Error} = \frac{\textrm{Total error}}{\textrm{Initial Estimate}} \times 100$

= $\frac{2 }{3} \times 100 = 66.66$

Or, the Percentage in Error  = 66.66%