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Points A, B, C, D, are arranged in order on a line so that AB = 3, BC = 2CD what is BD as a fraction of AD?

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Points A, B, C, D, are arranged in order on a line so that AB = 3, BC = 2CD what is BD as a fraction of AD?

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  1. AB = 3

    BD = BC+CD = 2CD + CD = 3 CD ---------(1)

    AD = AB + BD = 3 + 3 CD = 3(1+CD) ----(2)

    FROM EQUATION (2) WE GET CD = (AD/3)-1

    FROM EQUATION (1) WE GET BD = 3CD = AD -3

    THIS IS THE RIGHT ANSWER :)  :)

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