Suppose you have a real estate opportunity that requires $100,000 investment today but will pay you $250,000

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Question:

Suppose you have a real estate opportunity that requires $100,000 investment today but will pay you $250,000 in 8 years. What interest rate, r, would you need so that the present value of what you get is equal to the present value of what you give up?

a.) 10.135% b) 11.135% c) 12.135% d) 9.135%