document.write( "Question 1015670: Cadence has $12,000 to invest. She can invest in bonds that pay 10% interest and
\n" ); document.write( "CDs that pay 6% interest. She wishes to invest some both ways. How much does she invest in each if she earns $1070 interest in one year? Need equation please. \n" ); document.write( "
Algebra.Com's Answer #632024 by addingup(3677)\"\" \"About 
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Some in bonds at 0.10
\n" ); document.write( "Some in CDs at 0.06
\n" ); document.write( "Total 12,000
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\n" ); document.write( "Let's call the investment in bonds x
\n" ); document.write( "What's left of the 12,000 she will invest in CDs.
\n" ); document.write( "So:
\n" ); document.write( "bonds = x
\n" ); document.write( "CDs = 12,000-x
\n" ); document.write( "Good so far? OK, let's do this:
\n" ); document.write( "0.10x+0.06(12,000-x) = 1,070
\n" ); document.write( "I will rearrange the terms to make it more intuitive:
\n" ); document.write( "0.10x-0.06+720 = 1,070 Subtract x on left and subtract 720 on both sides:
\n" ); document.write( "0.04x = 350 Divide both sides by 0.04
\n" ); document.write( "x = 8,750 is how much she invested in bonds. And:
\n" ); document.write( "12,000-8,750 = 3,250 in CDs
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\n" ); document.write( "Check:
\n" ); document.write( "8,750*0.10 = 875
\n" ); document.write( "3,250*0.06 = 195
\n" ); document.write( "___________-------
\n" ); document.write( "Total... = 1,070 We have the correct answer \n" ); document.write( "
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