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  3. over a period of 120 days, shawna johnson earned $

Over a period of 120 days, Shawna Johnson earned $400 interest in a retirement account...

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Basic Math

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Over a period of 120 days, Shawna Johnson earned $400 interest in a retirement account paying interest at a rate of 5%. Find (a) the principal at the beginning of the 120 days and (b) the amount in the account at the end of 120 days.(a) The principal was $(b) The amount in the account at the end of 120 days is $.

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