Question 1027198

If (Mr. X + Mrs. Y = 69 years) and (Mr. X + Mr. Z = 72 years) and (Mrs. Y + Mr. Z = 79 years).

So, how old are Mr. X, Mrs. Y and Mr. Z?
<pre>{{{highlight_green(matrix(1,10, "X's,", "Y's", and, "Z's", "ages:", "31,", "38,", and, 41, respectively))}}}