Question 1043544
LaToya, Austin, and Trey sent a total of 125 messages over their cell phone during the weekend. Latoya sent seven more messages than Austin; Trey sent four times as many as LaToya. How many messages did each send ? 
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L + A + T = 125
L = A + 7
T = 4L
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Substitute for A and T and solve for "L"::
L + L-7 + 4L = 125
6L = 132
L = 22 (# of LaToya messages)
A = L-7 = 15 (# of Austin messages)
T = 4L = 88 (# of Trey messages)
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Cheers,
Stan H.
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