Rather strange wording but it seems to require you to ignore the B waypoint altogether and just calculate a normal PNR from A and express your answer as a distance beyond B.
[attachment=2604]Screenshot 2025-09-25 at 9.36.11 am.png[/attachment]

Thanks, the wording had me in knots! Just one more thing, they didn't give me taxi fuel. Nothing was specified. Just total fuel and burn. I'm guessing I just ignore it as it has already been burnt?

Seems silly to ask, but just wanted to check!

If you weren't given a taxi fuel allowance, you have to assume that it isn't necessary. After all, what figure are you going to use for taxi fuel if it isn't mentioned. You can't just have a guess at one. Other people may choose a different one so there would be no way to give a 'correct' answer.

If I may throw in a couple of extra thoughts -

(a) [color=blue]Rather strange wording[/color] .. and then some.

(b) the winds don't gel so either you have recalled the numbers incorrectly or the question was flawed.

(c) if you have a multi-leg PNR requirement (very much the case for bigger aircraft with lots of fuel), such as this set out to be, it is getting more towards the style of ATPL PNRs. You just run the preliminary/final legs as normal flight planning calculations and then figure out what fuel is left for the final position X-PNR-position X calculation. This last bit can be done several ways depending on the specific circumstances but, philosophically, is just a CPL calculation thing.

(d) re taxy fuel, the question should have been more specific so that you could determine from where the "total" fuel commenced. As Bob observed, it would be nice to know something about how much taxy fuel.

Overall, it would look like the question is a bit amateurish.

Hey John,

The speeds of the wind matched up, I must got them wrong rewriting them, however it was the three components, written in that form. The wind from B to PNR was the component that confused me. I haven't been presented with a third wind that differed from the two.

This is was a CPL level question

Keep in mind that it helps greatly (especially for dumbos like me) to draw a sketch or picture of what the story is. That way you can see the tale and visualise just what's going on. Here, the AC headwind of 20 kt just doesn't add up with a subset tailwind B-PNR of 45 kt. BA is OK, though. If AC is a typo and was meant to be AB, and if B-PNR were a headwind, then it would be a bit more reasonable.

What I think the question started out to do was something in the line of ATPL questions, viz., give you the information to work out time and burn AB, then time and burn BA. From this you can figure what fuel you have to play with for the B-PNR-B bit and it all sort of works out nicely.