document.write( "Question 727081:
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document.write( "Last year, Lena had $10,000 to invest. She invested some of it in an account that paid 8% simple interest per year, and she invested the rest in an account that paid 5% simple interest per year. After one year, she received a total of $770 in interest. How much did she invest in each account? \n" );
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Algebra.Com's Answer #444989 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! .08X+.05(10,000-X)=770 \n" ); document.write( ".08X+500-.05X=770 \n" ); document.write( ".03X=770-500 \n" ); document.write( ".03X=270 \n" ); document.write( "X=270/.03 \n" ); document.write( "X=9,000 AMOUNT INVESTED @ 8%. \n" ); document.write( "10,000-9,000=1,000 AMOUNT INVESTED @ 5%. \n" ); document.write( "PROOF: \n" ); document.write( ".08*9,000+.05*10,000=770 \n" ); document.write( "720+50=770 \n" ); document.write( "770=770 \n" ); document.write( " |