document.write( "Question 105295: I have a practice sheet my teacher gave me and I can not figure out this problem. Please help.\r
\n" ); document.write( "\n" ); document.write( "A broker invested $25000 in two different stocks. One stock earned dividents at 3.5% and the other at 4%. If a dividend of $900 was earned on both stocks together, how much was invested in each stock.\r
\n" ); document.write( "\n" ); document.write( "Please help -
\n" ); document.write( "Thanks
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #76641 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Let x = the amount invested at 3.5%, then ($25000-x) = the amount invested at 4%.
\n" ); document.write( "The dividend earned on the first amount is 3.5% of x and this can be written as: 0.035x.
\n" ); document.write( "The dividend earned on the second amount is 4% of ($25000-x) and this can be written as 0.04($25000-x)
\n" ); document.write( "The sum of these two dividend amounts is given as $900
\n" ); document.write( "We have enough now to write the necessary equation to solve for x.
\n" ); document.write( "0.035x + 0.04(25000-x) = 900 Simplify and solve for x.
\n" ); document.write( "0.035x+1000-0.04x = 900 Combine like-terms.
\n" ); document.write( "-0.005x+1000 = 900 Subtract 1000 from both sides.
\n" ); document.write( "-0.005x = -100 Divide both sides by -0.005
\n" ); document.write( "x = 20,000
\n" ); document.write( "$20,000 was invested at 3.5%
\n" ); document.write( "$5,000 was invested at 4%
\n" ); document.write( "Check:
\n" ); document.write( "$20,000(0.035)+$5,000(0.04) = $700+$200 = $900 Total dividends earned.
\n" ); document.write( "
\n" ); document.write( "
\n" );