Question 56088
You are not a total math loser or you wouldn't have gotten this far.  Let's be positive:
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An investor puts $3000 in 2 CDs, one of which earns 5% annually and the other earns 4% annually. After 2 years he has earned $260.  How much has he invested in each CD?
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Let the amount invested at 5% be:x
Then the rest of the $3000 is invested at 4%: 3000-x
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The interest formula is {{{highlight(I=Prt)}}}, I=interest, P=principal, r=rate, t=time
.05(x)(2)+.04(3000-x)(2)=260
.10x+.08(3000-x)=260  
.10x+240-.08x=260
.02x+240=260
.02x=260-240
.02x=20
.02x/.02=20/.02
x=1000
The amount invested at 5%:x=$1000
The amount invested at 4%:3000-x=3000-1000=$2000
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Happy Calculating!!!