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3 January, 01:38

After t years, the amount of money in a savings account that earns simple interest is p + prt, where p is the starting amount and r is the yearly interest rate. factor this expression.

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  1. 3 January, 02:33
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    Using I=PRT/100

    replacing the given information;

    (p+prt) = P*r*t

    ⇒p+prt=P*rt

    P = (p+prt) / (rt)

    Principal (P) = (p/rt) + p

    =p ((1/rt) + 1)
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