Schweser practice exams Vol 1 #3

The answer for question 18.4 contains a derivation of the Dollar Duration for the CTD with an equation containing a duration value of 10.15. Not crucial to the answer but where did the 10.15 number come from . I don’t see it in the vignette ? Anyone ?

Yes. I think exam 3 in V1 has a lot of errors. I am looking at the site now to see if there were any corrections raise. The site is quite slow now though…

I don’t think this is really an error . It looks more like background information for the rest of the question , just want to make sure I didn’t miss something in the vignette ?