document.write( "Question 631005: A high school student was able to save $8000 by working a part-time job every summer. He invested half the money in a money market account and half the money in a stock that paid three times as much interest as the money market account. After a year he earned $240 in interest. What were the interest rates of the money market account and the stock?\r
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document.write( "Answer in percentages and round to one decimal place.
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Algebra.Com's Answer #397265 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A high school student was able to save $8000 by working a part-time job every summer. \n" ); document.write( "He invested half the money in a money market account and half the money in a stock that paid three times as much interest as the money market account. After a year he earned $240 in interest. What were the interest rates of the money market account and the stock? \n" ); document.write( "Answer in percentages and round to one decimal place. \n" ); document.write( "----- \n" ); document.write( "Equation: \n" ); document.write( "4000x + 4000(3x) = 240 \n" ); document.write( "---- \n" ); document.write( "4000(4x) = 240 \n" ); document.write( "4000x = 60 \n" ); document.write( "x = 0.015 = 1.5% \n" ); document.write( "3x = 0.045 = 4.5%\r \n" ); document.write( "\n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "======== \n" ); document.write( " |