PT. Mighty Gold Duck (MGD) in recent years has conducted surveys and explorations on Bukit Dewa Putri and from temporary results that at a certain depth found in gold to be mined over the next few years. The problem issued by the company is that sulfuric acid extraction mining techniques will cause quite severe environmental damage. To overcome this impact, to company must add investment in new gold mining equipment, bringing the total investment value of equipment to be Rp 900 million. If the investment is carried out, the estimatednet operation cash flow from gold mining for next 5 years will results Rp 400 million per year, for the first 3 years and then Rp 300 million per year for the last two years. The expected rate of return on project investment is 20%.

From the data above, calculate the investment feasibility by using the investmentcriteria as follows:

a. Payback Period dan Discounted payback period?

b. Net Present Value (NVP)?

c. Internal Rate of Return (IRR)?

d. Modified Internal Rate of Return (MIRR)?

e. Profitability Index (PI)?