document.write( "Question 125175This question is from textbook A Graphical Approach to College Algebra
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document.write( "Nancy B. Kindy won $200,000 in a state lottery. She first paid income tax of 30% on the winnings. Of the rest, she invested some at 1.5% and some at 4%, earning $4350 interest per year. How much did she invest at each rate. \r
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Algebra.Com's Answer #91761 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Nancy B. Kindy won $200,000 in a state lottery. She first paid income tax of 30% on the winnings. Of the rest, she invested some at 1.5% and some at 4%, earning $4350 interest per year. How much did she invest at each rate. \r \n" ); document.write( "\n" ); document.write( "-------------------------- \n" ); document.write( "Nancy had 0.70*200,000= $140,000 to invest. \n" ); document.write( "------------------------------ \n" ); document.write( "Let amt. invested at 1.5% be \"x\" ; interest on this is 0.015x dollars \n" ); document.write( "Amt invested at 4% is \"140000-x\" ; interest is 0.04(140000-x)= 5600-0.04x \n" ); document.write( "------------------------------ \n" ); document.write( "EQUATION: \n" ); document.write( "interest + interest = 4350 \n" ); document.write( "0.015x + 5600-0.04x = 4350 \n" ); document.write( "-0.025x = -1250 \n" ); document.write( "x = $50,000 (amt. invested at 1.5%) \n" ); document.write( "140,000-x =$90,000 (amt invested at 4%) \n" ); document.write( "================================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |