document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1204638>Question 1204638</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The simple interest I varies jointly with the principal p, and time t. If the simple interest is $450 when the principal is $500 and the time is 6 years, find constant of variation (the rate) and the Interest when the principal is $800 and the time is 5 years. </SPAN>\n" );
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document.write( "The simple interest I varies jointly with the principal p, and time t. If the simple interest is $450 when the principal is $500 and the time is 6 years, find constant of variation (the rate) and the Interest when the principal is $800 and the time is 5 years.\r<BR>\n" );
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document.write( "I= k*P*t\r<BR>\n" );
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document.write( "450= k*500*6\r<BR>\n" );
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document.write( "k= 450/(500*6)\r<BR>\n" );
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document.write( "k=0.15\r<BR>\n" );
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document.write( "I= 0.15*800*5\r<BR>\n" );
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document.write( "I=600\r<BR>\n" );
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document.write( " The interest when the principal is $800 and the time is 5 years would be $600.\r<BR>\n" );
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document.write( " </SPAN>\n" );
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