CPL Navigation Textbook, last revision Dec 2021, page 123, Navigation Progress Test 4 question 7 …

Variable Reserve is stated as 'company policy' variable reserve of 15% of Trip Fuel. (please see attached screenshot)
However the answer is clearly using 10% given it's 1.1 variable.

What explains this? (and/or, shouldn't it use variable of 1.15 for the calculation).

Thanks for any help. Cheers, Tim.

Book has been updated to state 10%, not 15%.

Thanks for the reply -

Just to clarify your short response ... "book updated" ... as in, me/Tim picked up the error and the book will be updated. (so future people who buy the book will not see the error).
> If so, what about the people who have the book already ... why is this NOT in the ERRATA ?

Or rather, the book had already been updated and I was using an OLD copy ... AND somewhere/somehow I missed that the ERROR/Mistake had already been called out in the ERRATA/known_errors list.

I only make the point because working through this stuff is hard and frustrating, without the ADDED challenge of wondering if heaven forbid, the answers are wrong.

It appears that you are working from an old book. The old 'variable reserve ' was changed to 'contingency fuel' a few years ago (See CASR Part 135 Chapter 7 para 7.02. The current versions of the book reflect that.

Thanks Bob, I appreciate the reply but shouldn't there be a reference somewhere that the question/answer from that version of the text is inacurrate.
I acknowledge it is not on you guys to publish a delta between textbook versions, (and I can live with a difference in terminology between versions) [and yes, I only bought the text book less than 2 years ago] ... but when it comes to the math of questions/answers ... there is an error in that text and it doesn't seem to be called out anywhere (or, where can I find it).

Cheers, Tim