Quote:
Originally Posted by getbak
A final cost of $X.X8 or $X.X9 would be rounded up to $X.Y0
A final cost of $X.X6 or $X.X7 would be rounded down to $X.X5
A final cost of $X.X3 or $X.X4 would be rounded up to $X.X5
A final cost of $X.X1 or $X.X2 would be rounded down to $X.X0
On some transactions, the price would round up by no more than 2 cents.
On other transactions, the price would round down by no more than 2 cents.
All things being equal, the increases and decreases would balance themselves out over the long run.
Any store that has a "Need a penny, take a penny" cup is already doing this, in effect because you contribute a penny to the cup when you have one in your change (rounding the price you paid up to the nearest nickle) and take one out when you need one (rounding the price you paid down to the nearest nickle).
I wonder how this would affect the various charities that have collection boxes at check-outs? Will they receive less because people have fewer pennies to throw in, or will they receive more because people will start throwing in nickles and dimes?
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In theory, you're right. In practise, I'm sure certain stores will end up adjusting their prices so you always round up.