Barbara is an economist researcher and commentator. The Eco Books Ltd offers her $13,000 for writing a book about economics principles. Barbara has never written a book about economics principles, but accepts the offer and writes the economics book called ‘Principles of Economics’. She assigns the book’s copyright for $13,400 to The Eco Books Ltd. The book is published and she is paid. She also sells the book’s manuscript to the Eco Books Ltd’s library for $4,350 plus several interview manuscripts she has collected while writing the economics book for which she receives $3,200.

Discuss each of the above payments to Barbara separately and states if these are income from Barbara’s personal exertion. (2.5 marks) Would your answer differ if Barbara wrote the Principles of Economics’ book before signing a contract with The Eco Books Ltd in her spare time and only decided to sell it later? (2.5 marks) Support your answer by referring to relevant statutory and case law.