<PRE><B>Question 70101</B>
Let x= amount at 14%
Then 20000-x=amount at 13%

I=PRT  where T=1  So our equation to solve:

0.14x+0.13(20000-x)=2720  get rid of parens

0.14x+2600-0.13x=2720  subtract 2600 from both sides
0.01x=2720-2600
0.01x=120 divide both sides by 0.01
x=$12000 --------------------------------amount invested at 14%

20000-x=20000-12000=$8000----amount invested at 13%

Ck

12000(.14)+8000(.13)=2720
1680+1040=2720
2720=2720


Hope this helps----ptaylor

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