The phone one was a bit grating because the numbers didn't have any quantities attached to them. Though of course that would make the question trivial, if I wro

The phone one was a bit grating because the numbers didn't have any quantities attached to them. Though of course that would make the question trivial, if I wrote something like "P = 108 - 23*d", I'd get marks off and a big (WHAT?) next to the numbers. Without specifying 108 whats it is, it could be 108 peppers or 108 bicycle-riding monkeys wearing suits. It's more of a common sense question than an actual mathematics question.