document.write( "Question 764689: A sum of money at simple interest amount Rs.815 in 3 years and Rs.854 in 4 years what is the principle amount invested? \n" ); document.write( "
Algebra.Com's Answer #465630 by Theo(13342)\"\" \"About 
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you have 815 in 3 years and 854 in 4 years.
\n" ); document.write( "thie means the increase is equal to 39 in 1 year
\n" ); document.write( "3 * 39 = 117
\n" ); document.write( "815 - 117 = 698
\n" ); document.write( "your principal is equal to 698.
\n" ); document.write( "in 4 years the money grows at the same amount each year.
\n" ); document.write( "time point 0 = 698
\n" ); document.write( "time point 1 = 737
\n" ); document.write( "time point 2 = 776
\n" ); document.write( "time point 3 = 815
\n" ); document.write( "time point 4 = 854
\n" ); document.write( "your simple interest rate is equal to 39 / 698 = .0558739255.
\n" ); document.write( "the simple interest is calculated off of the original principal and the same amount of interest is added each year.
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