On Sat, 13 Apr 2013 19:14:08 +0100, polygonum wrote:

(And the way shops mix up price per 100 ml, per litre, per 500 g, etc.
Comparisons may be possible, but why keep changing the units?
Definitely not to our benefit.)

At least those are normally 1l/100ml, 1kg/100g, it's easy to shift the
decimal place in your head, unlike working out the 2fer example I posted
earlier.

--
Cheers
Dave.