Techno Serve Ltd has noticed a significant decrease in the profitability of its line of portable CD players. The production manager believes that the source of the trouble is an existing, inefficient equipment used to manufacture the product. The issue raised, therefore, is whether Techno Serve Ltd should $(1)$ buy new equipment at a cost of R$120000$ or $(2)$ continue using its present equipment. It is unlikely that demand for these portable CD players will extend beyond a three$-$ year time horizon and the new equipment can be sold for R$45000$ at that time. Techno Serve Ltd estimates that both the new equipment and the existing equipment will have a remaining useful life of five years and no salvage value. The new equipment is expected to produce annual cash savings in manufacturing costs of R$34000,$ before taking into consideration depreciation. However, management does not believe that the use of the new equipment will have any effect on sales volume. Thus, its decision rests entirely on the magnitude of the potential cost savings. The existing equipment can be sold for R$20000$ if it is replaced. The company requires a minimum return of $12$ percent on all investments in plant assets.

$4\mathrm{.}3\mathrm{.}1.$ Compute the net present value of the new machine. $(8$ marks$)$

$4\mathrm{.}3\mathrm{.}2.$ Compute the internal rate of return of the investment in the new machine. $(2$ marks$)$

$4\mathrm{.}3\mathrm{.}3.$ Recommend if Techno Serve Ltd should buy the new equipment or continue using its

existing machine.

$(2$ marks$)$