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May 1st, 2017, 05:37 AM   #1
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Question aplicated math

(Ingles)
If the capital equals 2 out of 3 of the interest and the term of application is 5 months, what will be the interest rate considered?

(Portugues)
Se o capital for igual 2 sobre 3 dos juros e o prazo de aplicação for de 5 meses, qual será a taxa de juros considerada?

(Espanhol)
Si el capital es igual a 2, el 3 de interés y el plazo de solicitud es de 5 meses, lo que se considera la tasa de interés?
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May 1st, 2017, 01:28 PM   #2
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assuming monthly accrual

$c + i = (1+r)^5 c$

$1 + \dfrac i c = (1+r)^5$

$1 + \dfrac 1 2 = (1+r)^5$

$(1.5)^{1/5}-1 = r$

$r \approx 0.084 = 8.4\%$
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May 1st, 2017, 05:52 PM   #3
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Quote:
Originally Posted by yury View Post
If the capital equals 2 out of 3 of the interest
Romsek, that really should be:
if the interest is half the capital

Agree?

Yury, try and get an English girlfriend!
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May 2nd, 2017, 12:29 AM   #4
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Quote:
Originally Posted by Denis View Post
Romsek, that really should be:
if the interest is half the capital

Agree?

Yury, try and get an English girlfriend!
yes, 2 capital, 1 interest

$\dfrac i c = \dfrac 1 2$
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May 3rd, 2017, 12:00 PM   #5
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It's too difficult, give me some cousin.

Last edited by yury; May 3rd, 2017 at 12:02 PM.
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