Answer and Explanation:
Given:
Investment cost = $152,000
Projected cash flows = $71,800, $86,900, -$11,200
Rate of return = 15.5% = 15.5 / 100 = 0.155
The internal rate of return is really a way of describing an overall project cost in a ratio rather than in a monetary sum.
Also, in this case, we cannot use the IRR method because cash flow trend changes.
So, we cannot use the IRR method in this situation.