Question 1157227
<pre>
PERSON    VARIABLE   EXPRESSION OR VALUE
narrator    n        2d+5
wife        w        d+d+d=3d
daughter    d      
SUM                   100
</pre>
Notice from description, wife "twice older than daughter".
{{{(2d+5)+3d+d=100}}}
Solve for d, and decide if the value found makes sense.