Gross Premiums and Reserves

http://i44.tinypic.com/2u3ytlx.jpg

Um, please could I get some help on this question? I actually have the solutions but I believe them to be wrong and I'd just like to check.

And I don't understand part(b) at all so could someone please explain it to me? Many thanks!

http://i42.tinypic.com/2wggm7s.jpg

When calculating j, shouldn't b be 1.92308%?

And shouldn't the APVFB(0)=10000xE(v^T(1+b)^k))?

http://i42.tinypic.com/2mhc2hi.jpg

http://i39.tinypic.com/2ilh63m.jpg

I don't understand any of part b, so any help would be much appreciated.