How long will it take for an investment to triple, if interest is compounded continuously at 4%?

To the nearest year, it will it take #18# years for an investment to triple, if it is continuously compounded at #6%# per year.

An investment #P# compounded continuously at a rate of interest of #r%# per year for #t# years becomes

#Pe^(rt)#, where #e# is the Euler's number, an irrational number, after Leonhard Euler whose value is #2.71828182845904523536....# and logarithm to base #e# is mentioned as #ln#, known as natural log.

As in #t# years, investment triples, it becomes #3P#

Hence #Pe^(0.06t)=3P#

or #e^(0.06t)=3#

i.e. #0.06t=ln3=1.0986122887#

therefore #t=1.0986122887/0.06=18.31#

hence to the nearest year, it will it take #18# years for an investment to triple, if it is continuously compounded at #6%# per year.

Problema Solution

How long will it take for an investment to triple if it is compounded continuously at 14%?

Answer provided by our tutors

Let

P = the principal (the investment)

t = the time in years

r = 0.14 or 14% the annual interest rate

A = 3P the future value (the investment will triple)

the future value formula is:

A=Pe^(rt)

we plug the above values and get:

3P = Pe^(0.14t)

Pe^(0.14t) = 3P

........

click here to see all the equation solution steps

........

t = 7.85 years

It will take 7.85 years for the investment to triple.

%?

It will take how many years before the investment triples.

​(Round to the nearest tenth of a​ year.)

Answer & Explanation

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How long will it take for an investment to triple, if interest is compounded continuously at 4%?

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How long will it take for an investment to triple if it is compounded continuously?

Answer and Explanation: Hence, it will take approximately 36.62 years to triple the investment when compounded continuously.

How long will it take for an investment to triple if it is compounded continuously at 12?

Answer and Explanation: Hence, it will take 9.2 years for an investment to triple if it is compounded continuously at 12%.

How long will it take for an investment to triple if interest is compounded continuously at 8%?

Answer and Explanation: The answer to the question is 14.3 years. There are two ways to get this answer. 1. Rule 115 where you divide 115 by the interest rate (115/8 = 14.3).

How long will it take for the investment to triple in value?

Rule of 115: If 115 is divided by an interest rate, the result is the approximate number of years needed to triple an investment. For example, at a 1% rate of return, an investment will triple in approximately 115 years; at a 10% rate of return it will take only 11.5 years, etc.