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Algebra

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Total age of 3 sisters is 39
Dina is 1/2 as old as Michelle and 3 years younger than Juliettte.
How old are the sisters ?

  • Algebra -

    D+M+J=39
    D=1/2 M
    D=J+3

    and, M=2D
    J=D-3
    intothe first equation
    D+2D+D-3=39
    4d=36
    you take if from here.

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