A company is considering the purchase of Machine X$,$ details below

Initial Investment YEAR $0$ R $(1500000)$

Net cash inflows: YEAR $1$ R $480000$

YEAR $2$ R $600000$

YEAR $3$ R $380000$

YEAR $4$ R $272000$

YEAR $5$ R $360000$

The cost of capital is $12\%,$ depreciation is calaculated using the straight$-$line method. No scrap value is expected for the machine, ignore taxes.

Calculate the payback period expressed in years, months and days.

Calculate the accounting rate of return on initial investment expressed to two decimal places.

Calculate the internal rate of return expressed in two decimal places if the net cash inflows are R $400000$ per year for five years. Include two net present value calculations using consecutive rates and percentatges and interploration.