Depends on if the discounts stack or applied seperately
Seperately:
1100*.8=880
880*.8=704
Stack
1100*.6=660
Difference is 44 depending on how they apply the discounts. This all assumes they will apply both discounts. Most of the time they will not. I have work discounts and standard discounts do not apply when I use my work ones. Sometimes they will give you a work discount and a smaller additional, but that is even uncommon. I work in IT and that is pretty universal for all companies.