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Solved Investment Word Problem: Finding the Interest Rate for a Time Period In Days or Months
See Also: Find Interest for a Given Time Period
See Also: Find Interest Rate for Time Period in Days or Months
See Also: Find Balance After a Given Time

What You Enter
Determine the yearly rate of interest if $2000 is borrowed for eight months with interest of $120.






What You Get
Let P = Principle
Let R = Rate
Let T = Time
Let I = Interest

Given: P = $2000
Given: I = $120
Given: T = 8 MONTHS
Find: R
             8                
8 months =  ---- = (2/3) years
             12           
 
Interest = Principle * Rate * Time
I = PRT
R = I/PT
         120          
R =  -------------- =  0.09  
      2000 * (2/3)           
R = 9%

































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Updated May 28, 2008
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