document.write( "Question 1147832: An investment of $18000 earned $10800 interest in 5 years.
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Algebra.Com's Answer #769147 by ikleyn(52794) $\"\"$ $\"About$

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document.write( "One year interest is   = 2160 dollars.\r\n" );
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document.write( "Then the simple interest rate is   = 0.12 as a decimal, or  12%  as percentage.\r\n" );
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