[Year 12 Its] Question from 2003 IS Exam

[Phil Feain]

Hi all

Just wanting to see what the answer is to Question 6 on the 2003 Exam 
involving the NS diagram. I can remember someone working through it the 
other year, but have lost it, and just want to check my solution.

Cheers

Phil Feain
St. Kevin's College
Moonga Rd
Toorak