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13 February, 14:25

Three golfers, Vijay, Ernie, and Phil , during five years had a total of 221 top-10 finishes. Ernie had 13 more top-10 finishes than Phil. Vijay had 16 more top-10 finishes than Phil. Determine the number of top-10 finishes for each golfer.

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  1. 13 February, 14:33
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    For this case what you must do first is to define the following variables:

    x: number of top-10 finishes for Vijay.

    y: number of top-10 finishes for Ernie.

    z: number of top-10 finishes for Phil.

    We write the following system of equations:

    x + y + z = 221

    y = 13 + z

    x = 16 + z

    Solving the system we have:

    Step 1:

    x + y + z = 221

    (13 + z) + (16 + z) + z = 221

    3z + 29 = 221

    z = (221-29) / (3)

    z = 64

    Step 2:

    y = 13 + z

    y = 13 + 64

    y = 77

    Step 3:

    x = 16 + z

    x = 16 + 64

    x = 80

    Answer:

    the number of top-10 finishes for each golfer is:

    Vijay: 80

    Ernie: 77

    Phil 64
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