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  • Perplex
    IB Math AIHL
    /
    Financial Mathematics
    /

    Problem Bank

    [Maximum mark: 5]

    Laura invests ​$6000​ in a savings account that pays an annual interest rate of ​5.5%. Interest is compounded monthly.

    1. Give an expression for the value of Laura's savings after ​n​ years.

      [1]

      To earn a crown, get your answer ready before you reveal the options!

    2. Calculate the amount of interest she will earn over ​5​ years, giving your answer to the nearest dollar.

      [2]

    Laura wants to use her savings to put down a ​$10000​ deposit on a car.

    1. Find the number of years Laura will have to wait.

      [2]

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