grandtanteJE65
You really cannot blame a young person for being confused about imperial measures and how they compare to the metric system. After all, I am 71 and had left school at 15 before the change came in in Britain.
Denmark went over to the metric system some time in the end the 19th century - only historians learn the old measurements and weights (if they need to), school-children do not and haven't done so for over a century.
But my generation and my mother's and grandmother's still talk or talked about buying a pound of something - which is more than an Imperial pound if you really want to know, and my husband's generation of joiners and carpenters continued to use inches when ordering wood from the wood-yard.
Finally nearly 200 hundred years after the change the generations that are younger then we, have no idea what we are talking about if we say, "I bought a pound and a half of mince," or "I shall need a dozen four by twos for the job." and this is really how it should be.
The young woman mentioned in OPs post should however have known that kgs stands for kilo or kilograms, but is justified in asking whether that is the same as a pound.
I took my maths O level in Imperial measurements. In 1968/70 I had to learn both systems for my maths A levels, the first years that this had happened.
For most of Britain the currency and general measurements didn't go metric until 1971.
I did find it very confusing. However I now weigh things, both myself and ingredients, in metric though all my scales can be used for both systems.
I actually only know my babies weights in imperial, and this still seems to be what people understand. Everyone seems to measure their height in feet and inches though!