Critical Path Analysis Question

Hi there,

Hopefully this will be an easy one for somebody to explain. I understand how to do critical path for figures like below, however I've completely forgotten how to determine the sequence of products manufactured.

I believe there was a simple way of doing it, I did know before but it's gone from my mind somehow.

*Question: Mass production company of replica masterpieces - commissioned to print and frame different paintings. Each type of painting requires a different type of frame. The company wishes to execute this commission as quickly as possible and has estimated the times for printing and framing as follows.*

*In what order should the company manufacture the products to minimize total production time?*

http://img249.imageshack.us/img249/843/table222yc6.jpg

Then it asks how long the process will take (requires critical path work) which I believe I can do, but can't do this until I know how to come up with the right sequence.

Should know this in case it comes up in my forthcoming exam. I appreciate the help!

Thanks

Deciding Sequence Using Gantt Chart?

Sorry to post again so quick, but it's quite urgent I find out how to do the sequence for the exam in case it comes up.

I heard you can decide the sequence using a Gantt chart? Can anybody explain?