ALGERA

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Suppose A-D=E, thAt N= 15,200, E/A= .40 and N/E=.25. compute D/A

  • ALGERA -

    as N/E = .25, N = .25 * E
    -> E = 60,800 as 15,200 = .25 * E

    as E/A = .40, E = .40 * A
    -> A = 152,000 as 60,800 = .40 * A

    as A - D = E, - D = E - A
    as - D = - 91,200, D = 91,200

    -> D/A = 91,200 / 152,000 = .60

  • ALGERA -

    easier way:
    A-D=E , divide each term by A
    A/A - D/A = E/A
    1 - D/A = .40
    1 - .40 = D/A
    D/A = .60

    N never entered the picture.

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