[alkonaut]

The “maths” section of the Swedish SAT actually only deals with exactly this type of question (or at least it did last time I took it).

You get one question “how old is the shepherd” and then two pieces of information A: there are 125 sheep B: there are 5 dogs.

The alternatives for answering the question is whether it can be answered using A alone, B alone, requires both A and B, can be solved with either A or B, or can’t be solved at all.

This is a failure if 13-14 year olds are so used to being given questions that can be answered, that they are uncomfortable telling an authority that “it’s not possible to answer this”. It’s probably universal and I’m sure the same result could be found in Sweden despite our SAT’s (done later) have a whole section on finding nonsense.