In reading the attached WSJ article answer the following using the following concepts from Chapter $9$:

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Payoff

NPV

IRR

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Rio Tinto Plans $$6\mathrm{.}2$Billion InPvestment in Guinea Iron Ore Project $-$WSJ$.$pdfOpen this document with ReadSpeaker docReader

Download Rio Tinto Plans $$6\mathrm{.}2$Billion Investment in Guinea Iron Ore Project $-$WSJ$.$pdfOpen this document with ReadSpeaker docReader