Oh yea...been their, done that. Just the other day, computer system crashed and drive thru line was backed up. I waited in line for about 30mins. Good thing I was in no hurry.

Your back is fine and..........your front is really, really nice also.

Thank You

Or when I hand the clerk 120.65 for the bill is 110.83.  Gawd I love to see the look on their faces without the computer telling them what the change SHOULD be!  Have the new breed of Generation X, Y or whatever  letter they are on forgotten how to add / subtract / multiply / divide?  No wonder they are a big user of CCs.  They do not think like us older folks in terms of compounding interest and the idea of paying your bills on time.  

Not to mention the Susan B. Anthony dollar.

I collect coins.  Not long ago, I bought some half dollar rolls from a bank, hoping to find some silver halves.  I decided not to take the rolls back to the bank, but to just spend the halves after going through the rolls.  I stopped at a Dairy Queen and paid for my Blizzard with some of the halves.  The teenage cashier had to ask someone what they were.

To be fair, half dollars rarely circulate anymore, so it didn't really surprise me that happened.  You would still think they would've at least knew of them from their early math classes in school.

as a teenager I worked in a retail store. We had old-time cash registers with rows of numbers on them, not today's keypad.

We were trained to make change correctly since the register didn't tell us what to give back.

In your case, I'd have taken your money laid it on the register shelf and said, "15.78 out of 20.03." or perhaps "15.75 out of 20."  

Got the change out, counting up from the sale amount to the tendered amount, got a quarter, makes 16, got 4 ones, makes 20.

Turned to the customer and said, "15.78 out of 20.03," hand them the quarter, "16.03," hand them a one, "17.03," another one, "18.03," another one, "19.03," and one more, "20.03."

I've communicated twice what the sale and tendered amounts were, counted the change twice, plus if there was a question, the customer's tendered amount was still on the register shelf in plain view.

Many days even with multiple people running a register, we were right to the penny! Wonder how far off they are these days, when they just plop the change into your hand?

I believe thinking skills are out the window. Too often people today just swallow what they're told without even evaluating stuff. It shows up in the incompetence we see around us. It's too bad because kids today deserve better.  They'll do better if they're challenged, too.