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18 November, 12:47

Mary 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? (Hint: subtract and then divide by actual number)

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  1. 18 November, 16:04
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    The percent error is 40%.

    Step-by-step explanation:

    5 (actual time) - 3 (estimated time) = 2

    2 divided by 5 (actual time) = 0.4

    0.4 x 100 = 40%
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