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It would definitely complicate mental math for most people.

• FirmwareBurner 3y ago
  How so? Prices are rarely fixed even integers so people are used to floats anyway.
  • epolanski 3y ago
    You need to understand how people do math mentally, especially cashiers. When someone pays, say 6.80 euros and gives you a 10 what virtually every cashier does is: - tell you it's 6.80 - add 20 cents to get to 7 and put them on the table while saying "seven" - add 1 euro to get to 8 and put them on the table saying "eight" - add 2 euros to get to 10, put them on the table "and ten, thank you good bye" Now add 2.50 euros to the mix. It gets complex and slower which is what you want to avoid when counting money. Same reason why we have 1, 2, 5, 10, 20, 50c coins but no 25c one. Some shops have the machines do the calculation and even give you the change automatically, but that's not most of the businesses, it's more common in supermarkets than say a diner, a gas station or your auntie's garage.
    • mlyle 3y ago
      Imagine if Coke had gotten their way and had gotten a 7.5 cent coin issued in the US...
    • crazygringo 3y ago
      > Same reason why we have 1, 2, 5, 10, 20, 50c coins but no 25c one. I guess that's why it doesn't seem difficult for anyone in the US -- we have $0.25 coins but not $0.20 ones (nor $0.50 ones in common usage), and I've simply never heard of anyone saying that thought quarters made anything more complex or slower. It's just a non-issue. But it's also funny that in the US you don't really see anybody counting change the way you're demonstrating -- it seems backwards. Like, first you calculate the change, and then you count out the change. If it's $0.40 in change, then it's a quarter and a dime and a nickel without even thinking about it.