The interest rate required for a $2,050 investment to double in 5 years can be found from this equation:   4,100=2,050(1+r2)104,100=2,0501+r210 . Find the necessary rate.

Essentials Of Investments
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Author:Bodie, Zvi, Kane, Alex, MARCUS, Alan J.
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Chapter1: Investments: Background And Issues
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The interest rate required for a $2,050 investment to double in 5 years can be found from this equation:

 

4,100=2,050(1+r2)104,100=2,0501+r210

.

Find the necessary rate. Your answer should be a decimal, but express it as a percentage to 2 decimal places:

 

The rate is   %

 
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