<PRE><B>Question 1069670</B>
Draw the description and label everything you can.
If let h be the margin at the foot of the mounting card, then the dimensions of the photograph will be these:


Width:  {{{20-2*3=20-6=highlight(14)}}}

Tall: {{{30-3-h=highlight(27-h)}}}


The photograph and the mounting card were described as being similar, therefore their linear measures or dimensions, are in proportion.


{{{highlight_green(14/20=(27-h)/30)}}}


Try to finish this the rest of the way.</PRE>