math

On the first day in each month, Enid deposited $4 into her bank account and Jim deposited $3 into his. They opened these accounts on May 15, 1990. On December 31, 1990, they each had $72 dollars in their account. How much did each person deposit on May 15?
(Note: Neither person earned interest.)

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  1. Let X = amount Enid deposited on May 15.
    and Y = amount Jim deposited on May 15.
    ==================================
    May 15 = X...........Y
    June 1...4...........3
    July 1...4...........3
    Aug 1....4...........3
    Sept 1...4...........3
    Oct 1....4...........3
    Nov 1....4...........3
    Dec 1....4...........3
    TOTAL...X+28.......Y+21

    Each has 72 at the so
    X+28=72
    Y+21 = 72
    Solve for X and Y.

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  2. Thank You!

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