document.write( "Question 907184: Dale invested his savings in two investment funds. The $8000 he invested in Fund A return a 10% profit. The amount he invested in Fund B returned a 3% profit. How much did he invest in Fund B, if both funds together returned a 7% profit? \n" ); document.write( "
Algebra.Com's Answer #550178 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
.10*8000+.03*x=.07*(8000+x)
\n" ); document.write( "we know 3 rates and one amount invested
\n" ); document.write( "0.1*8000+0.03(x)=0.07(8000+x)
\n" ); document.write( "Multiply out.
\n" ); document.write( "800+0.03(x)=560+0.07x
\n" ); document.write( "combine like terms
\n" ); document.write( "-0.04x=-240
\n" ); document.write( "isolate x
\n" ); document.write( "x=-240/-0.04
\n" ); document.write( "Divide
\n" ); document.write( "x=6000
\n" ); document.write( "check
\n" ); document.write( "0.1*8000+0.03(x)=0.07(8000+x)
\n" ); document.write( "800+0.03*6000=0.07(8000+6000)
\n" ); document.write( "800+180=0.07(14000)
\n" ); document.write( "980=980
\n" ); document.write( "ok\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );