Even in metric units, the issue is not easy. In the UK, the unit price must
be by the litre or kg etc. But there are exceptions, for example the unit
for herbs and spices is 10 g. Rice was also an exception (unit = 100 g) but
pasta was not, industry says that rice and pasta should have the same unit
and they may abolish the rice exception.
I'm not sure I agree with Terry. As I said in my other message, I AGREE that it is preferable to use the SAME unit in unit pricing for all packages of the same commodity. But if it is NOT done, then, in metric, the conversion is so easy that I dispute Terry's opening statement that it is not.
A price in cents* per 100 g and a price in cents per 10 grams can be easily compared. 50 cents per 100 grams is equal to 5 cents per 10 grams. It takes a moment's thought but it's not hard. (In old English measures, converting from a price in pounds to a price in ounces requires dividing by 16 which, even after a moment's thought, involves the difficult step of dividing by 16 (especially difficult if you forget that the factor is 16).
Regards, Bill Hooper Fernadina Beach, Florida, USA
* In place of cents, enter any monetary unit you wish if you're not in the US.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Go Metric America! Or get left behind! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
