Could someone please post the working for this question or an explanation. The pdf with the examiners report is missing all the symbols (+,-, sum, etc.)
I'm not sure what you mean. The pdf of the Examiners Report looks fine to me - there are lots of +/-/sums... It sounds like a glitch on your computer. I did spot one typo in it though: in the final line of the calculation of the ADS, -26.054 should be +26.054.
Thanks, I just checked it on my PC and it displays properly. I was viewing it on the iPad and for some reason it didn't display properly for that year but all the other years were OK.