#### Answer

Amount invested in CDS = 8,500 Dollars
Amount invested in Bonds = 11,500 Dollars

#### Work Step by Step

Let's assume that the amount invested in CDs = x.
As the amount invested in bonds is to exceed that in CDs by 3000 dollars, we can assume -
Amount invested in bonds = x + 3000.
Amount invested in bonds + Amount invested in CDs = $20,000.
(x + 3000) + x = 20,000
2x + 3000 = 20,000
2x = 17,000
x = 8,500
Thus, Amount invested in CDS = 8,500 Dollars.
Amount invested in Bonds = ( 8,500 + 3000) = 11,500 Dollars.