Quick question. Help would be much appreciated!

Lets say i have a pencil – Product A. And i also want to sell a bundle of Product A + a rubber. Is it possible to send 50 of Product A to amazon and 50 rubbers and have the 50 of those pencils to go Product A AND the bundle at the same time, or do I need to send 30 pencils seperate for Product A and 30 pencils seperate for the bundle.