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20 August, 01:58

Ruiz needs to buy a countertop for a kitchen. He calculated the area to be 16 square feet. The actual area is 15.4 square feet. What is Ruiz's percentage error?

(How do you solve this?)

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  1. 20 August, 05:47
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    First, subtract the two values:

    16 - 15.4 = 0.6

    Now divide this to the actual area:

    0.6 / 15.4 = 0.038961039

    Multiply by 100:

    0.038961039 * 100 = 3.8961039

    So the percent error is approximately 3.9%
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