I Can Count

Yesterday we celebrated Sunday by getting carry-out (!)

Total bill $11.47.  Got out $12.00, ready to hand it to the window person.

"$10.47."  Dumbly, I handed her the  $12.00. She handed back  .53 change and kept the extra dollar.
It was not a tip. I immediately realized something wasn't right. We got home and there were two cash register receipts in the bag.  One was for $11.47 and one was for $10.47 with a (old age) discount.


So, I guess it was tip.