I'm a simple emigrant, and here's how entertaining mathematics sounds in German

Somehow I wrote about physics for German children. So this time, the situation happened to be similar. At the same kind of event, there were beer kegs and a beer tap again recently. I either offered it out of kindness, or I lost in the game—I can't remember. But anyway, my task was to bring four glasses of beer. I don't drink beer much myself, so I already forgot that it's not that quick. For those who don't know: under such pressure and with a simple mechanism from the tap, only foam flows, even if you tilt the glass carefully. You might think that I simply don't know how to pour, but no, even if you dance with a tambourine—you're still going to have to pour foam, wait for it to settle, pour a new portion, wait again, and so on. But there is a positive side: while the glass is filling, you’ve already sobered up and are ready for new heights. And so I filled all the glasses; by feeling, it felt like forever, and I returned to the guys. I said I almost went grey while all of this piled up. And a friend says, didn't you know that “A good Pils needs 7 minutes.” or “Good beer needs 7 minutes.”. Of course, damn it, I didn't know, otherwise I wouldn't have gone with four glasses at once! This situation, however, gave me an idea for a puzzle in entertaining German mathematics. If one beer is poured in 3 iterations in 7 minutes, how long does it take to fill four full 200 ml glasses? And there's even a star question, for a bonus point: after how long will Lucy's patience run out standing at the tap? You go ahead and solve the puzzle for now, and I'll keep my eyes open; who knows, we might collect all school subjects! #curiosities