Problem

Solve the given problem releated to continuous compounding interest.
How long will it take $1,000 to triple if it is invested at an annual interest rate of 5.7% compounded continuously? Round to the nearest year. yr

Answer

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Answer

So, it will take approximately 19 years for the investment to triple.

Steps

Step 1 :We are given that the principal amount (P) is 1000,theamountofmoneyaccumulatedafternyears,includinginterest(A)is3000, and the annual interest rate (r) is 5.7% or 0.057 in decimal form. We need to find the time the money is invested for in years (t).

Step 2 :The formula for continuous compounding interest is A=Pert.

Step 3 :We can rearrange this formula to solve for t, giving us t=1rln(AP).

Step 4 :Substituting the given values into this formula, we get t=10.057ln(30001000).

Step 5 :Solving this equation gives us t19.

Step 6 :So, it will take approximately 19 years for the investment to triple.

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