document.write( "Question 1029187: Using algebraic progression:
\n" ); document.write( "Hanh deposited $200 into the bank on 1 January and on the first day of each of the following months. At the end of June, when the interest was calculated, he found that his account balance was $1206.30. Find the rate of simple interest paid by the bank.
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Algebra.Com's Answer #644279 by stanbon(75887)\"\" \"About 
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Hanh deposited $200 into the bank on 1 January and on the first day of each of the following months. At the end of June, when the interest was calculated, he found that his account balance was $1206.30. Find the rate of simple interest paid by the bank.
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\n" ); document.write( "Jan1:: 200
\n" ); document.write( "Feb1:: 2(200)+200(r) = 200(2+r)
\n" ); document.write( "Mar1:: 3(200) + [200(2+r)]r = 200(3+(2+r)r = 200(3+2r+r^2)
\n" ); document.write( "etc. till you get to 1Julyl.
\n" ); document.write( "Then set the 1Jul result equal to 1206.30 and solve for \"r\"::
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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