document.write( "Question 133787: Hello,
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document.write( "I am really confused about this word problem. Setting up the problem properly is what I need the most help on. Do you know how to set up the equation for this problem properly? Any help would be greatly appreciated.\r
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document.write( "A man invests a certain amount of money in an account that pays 7% annual interest. He invests $350 more than that in an account that pays 8% annual interest, how much did he invest in each account if the total interest after one year was $250? \r
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document.write( "Thank you,
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document.write( "Mrs. Gibson \n" );
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Algebra.Com's Answer #97885 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A man invests a certain amount of money in an account that pays 7% annual interest. He invests $350 more than that in an account that pays 8% annual interest, how much did he invest in each account if the total interest after one year was $250? \n" ); document.write( ": \n" ); document.write( "Let x = \"a certain amt of money\" invested at 7% \n" ); document.write( ": \n" ); document.write( "It says $350 more than that is invested at 8%, therefore \n" ); document.write( "(x+350) = amt invested at 8% \n" ); document.write( ": \n" ); document.write( "We have a simple interest equation: \n" ); document.write( ".07x + .08(x+350) = 250 \n" ); document.write( ".07x + .08x + 28 = 250; multiplied what's inside the brackets \n" ); document.write( ".15x = 250 - 28; subtract 28 from both sides \n" ); document.write( ".15x = 222 \n" ); document.write( "x = \n" ); document.write( "x = $1480 invested at 7% \n" ); document.write( "then \n" ); document.write( "1480 + 350 = $1830 invested at 8% \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution by finding the total interest \n" ); document.write( ".07(1480) + .08(1830) = \n" ); document.write( "103.60 + 146.40 = 250; confirms our solution \n" ); document.write( " |