document.write( "Question 1027198: If (Mr. X + Mrs. Y = 69 years) and (Mr. X + Mr. Z = 72 years) and (Mrs. Y + Mr. Z = 79 years).\r
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Algebra.Com's Answer #642452 by MathTherapy(10553) $\"\"$ $\"About$

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\n" ); document.write( "If (Mr. X + Mrs. Y = 69 years) and (Mr. X + Mr. Z = 72 years) and (Mrs. Y + Mr. Z = 79 years).\r
\n" ); document.write( "\n" ); document.write( "So, how old are Mr. X, Mrs. Y and Mr. Z?
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