2D Packing

Hello
I am not sure many people have PackRat. I don’t. But as your problem seems rather simple. But a sketch could be welcomed.
For 2D packing that is not packing I suppose. Packing for me is more useful when you have a set f shapes and you want to optimise…
So did you look at that ?
http://www.grasshopper3d.com/forum/topics/rectangle-false-packing-sample-and-example