Math Problem Statement
You own a coal mining company and are considering opening a new mine. The mine itself will cost
$ 119.6$119.6
million to open. If this money is spent immediately, the mine will generate
$ 21.7$21.7
million for the next 10 years. After that, the coal will run out and the site must be cleaned and maintained at environmental standards. The cleaning and maintenance are expected to cost
$ 1.7$1.7
million per year in perpetuity. What does the IRR rule say about whether you should accept this opportunity? If the cost of capital is
8.1 %8.1%,
what does the NPV rule say?
Solution
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Math Problem Analysis
Mathematical Concepts
Internal Rate of Return (IRR)
Net Present Value (NPV)
Perpetuity
Discounting Cash Flows
Formulas
NPV = -Initial Investment + ∑ (Cash Flow / (1 + Discount Rate)^t)
Present Value of Perpetuity = Annual Perpetuity / Discount Rate
Theorems
IRR Rule
NPV Rule
Suitable Grade Level
College Level (Finance, Economics, Business)
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