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delirium happy

Just keep on trying till you run out of cake

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Arithmetic
SHM
rho
I have a question for those of you who have worked retail and/or are no good at maths.

See, I'm good with numbers. Always have been. One of the consequences of this is that I'm really not sure what an average level of numeracy is.

When I went to the supermarket yesterday, after going through the checkout, I owed £32.74. Now, I had in my purse at this point some twenty pound notes and an absolute ass-load of coins. I could have just given the guy at the checkout two twenties, but I didn't want to do that because that would have meant getting even more change.


My first thought was just to hand over £43, and get given £10.26 in change. However, I know that this doesn't always go over too well. I've had cashiers act very, very confused when I've done that sort of thing, and I'm sure I've seen some of you people rant about having to make change for crazy mathmos.

Having contemplated various other possibilities (£42.74, £43.04, etc.) I figured that I had so much change on me, I may as well count it out and pay the exact amount. So I counted out twelve pound coins and handed them over "that's twelve pounds there", then counted out 74 pence, "and here's 74p" and finally handed over a twenty pound note.

To me, this is obvious. 12 + 0.74 + 20 = 32.74, but the guy I handed it too spent a good few seconds looking confused and totting it up in his head then apologised for having to do so. So I'm curious about two things:

1. How obvious is that sort of sum to people at large? Is it something that most people can tot up without thinking, or am I just unusually numerate?

2. Given that I didn't want to just give £40 and get a whole lot of extra change, is there any more cashier-friendly method I could have used?

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Having worked retail, I can say that average numeracy is scarily low. that said, whilst I believe I would have followed what you'd done there, I'd still have double checked it, as too many people try to pull a fast one.

Oh and cashiers will love you for giving change. So mant times I've had customers purchase very small items to break very big notes (£20 note for a pack of chewing gum was common) just so they could get the change. The tills empty fast at that rate.

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