Mystery Phone Call

Just had a message from an ex in the States who asked me if she could ring me urgently.

Of course I said yes and I'm busy wondering what it is about. Does she want to talk about her job? Is she annoyed at me for something? Does she want to talk relationships? It's 10 pm at night so it must be important.

Well she calls, and her urgent query is asking how to solve the problem x/2 + x/4 = 1. Her boss' daughter needs it solved for her and despite being a firm of accountants, no one at their workplace could remember how to do it. The boss is calling all his staff for an answer.

Luckily I can recall some basic algebra manipulation with numerators etc and told her how to solve it.

So nice to know she thinks of me for the really big issues. We haven't chatted for several months and our only phone call is about algebra!