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75.2 You are considering an open-pit mining operation. The cash flow pattern is somewhat unusual since you must invest in some mining equipment, conduct operations for two years, and then close and restore the sites to their original condition. You estimate the net cash flows to be as follows: n 0 1 Cash Flows -$1,600,000 $1,500,000 $1,500,000 -$700,000 2 3 What is the approximate rate of return of this investment? (a) 25% (b) 38% (c) 42%