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Author Topic: Looking for help with economics!
aiua
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Assume the interest rate is 5%.
If you were given $5 a year for eternity, how much would this be worth?

Is there a formula to calculate present value of an asset which produces a yearly stream of income?

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MrSquicky
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Yes, there is. However, this really sounds like you tryign to get people to do your homework for you, which is not something we do here.
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aiua
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Sorry, it's not homework. It's something that was explained poorly in the book and I was hoping for a better explanation.
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El JT de Spang
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Let me ask you a question: if I give you a dollar a year for eternity, how much money will you have at eternity?
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aiua
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1n?
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El JT de Spang
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What's n? Are you supposed to just present the formula where n equals the year between here and eternity, or are you actually supposed to come up with an answer?
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El JT de Spang
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You should be given the formulas in the text, but the one you need is here.
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aiua
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No, I just wasn't sure how to answer your question.
We're trying to figure out worth, more or less what we'd pay for it today.

What I was thinking was:
[cost of the object] x [interest rate] = [yearly income from object]->
[cost] x .05 = $5
So the cost would be $100, right?

But now I'm a bit confused because I would have thought it'd be worth more than that. That and I'm not sure what purpose the interest rate serves.

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El JT de Spang
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Just do it manually for like 3 years and you'll see what the interest rate is for.

Year one: $5.25
Year two: (5.25[yr1money] + 5.00[yr2money]) * 0.05[interest] = whatever
Year three: (whatever[yr2money] + 5.00[yr3money]) * 0.05[interest] = whatever2


See, the total money is added to the new money, and then the interest is paid on both.

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aiua
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Ah. Thank you very vey much. ^-^
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