4a) Expected cash flows for a strip-mining project are estimated as shown below. End of 0 6 7 year Cash -100,000 20,000 100,000 100,000 50,000 50,000 50,000 50,000 flow 8 -350,000 A startup cost is incurred immediately. The income exceeds outlays for the next 7 years. During the 8th year, the major cost is for landscape improvement. Does the strip mining project appear to be a profitable investment? On the basis of past experience, the mining company wishes to use MARR of 40%. Also, the company is keen on finding out the internal rate-of-return (i.e. IRR). NOTE: Check for dual rates of return