A. Alex purchased a CNC machine on 1st October 2019 at a cost of $110,000 (including GST). This machinery is estimated to have a useful life of seven years.

B. Alex purchased a Holden car on 1 May, 2019 at a cost of $63,000, estimated to have a useful life of five years.

Required: 

With reference to relevant legislation and case law, discuss and calculate what amount is allowed as a deduction for the decline in value of the machinery and the Holden car discussed above, using both Prime cost and Diminishing value methods.