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23 August, 07:10

Ms campbell invested $7200 for 2 1/2 years. if she earned $756, at what rate did she invest her money. using I=PRT and the answer in percent form

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  1. 23 August, 11:07
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    Given I=PRT

    Rearrange the formula to find R

    I / PT = R

    756 / (7200 * 2.5) = R

    756 / 18000 = R

    0.042 = R

    so R = 4.2%
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