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3 March, 08:22

The interest on an investment varies directly as the rate of interest. If the interest is $41 when the interest rate is

5 %, find the interest when the rate is

6.1 %

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  1. 3 March, 11:43
    0
    use the formula y=kx

    in this case y=interest and x=rate

    rearrange the formula to solve for k

    k=y/x

    41/5

    K = 8.2

    y=8.2 x 6.1

    y=50.02
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