Hi, you're right; sorry for being sloppy. I simplified the term bank teller to banker when I wanted to pose that problem to some non-native English speakers.

Hi, you're right; sorry for being sloppy. I simplified the term bank teller to banker when I wanted to pose that problem to some non-native English speakers. I did that reduce some "distraction" — the term 'teller' (or bank teller) is uncommon in most regions other than North America. But when posting it here on HN, I forgot to put back the original phrasing.