Question 1003847
x=bonds
stocks+CDs=170000-x
but x-10000=CDs
therefore, stocks+(x-10000)=170000-x
stocks=180000-2x

0.022x+0.0325(x-10000)+0.073(180000-2x)=170000
0.022x-325+0.0325x+13140-0.146x=7325
-0.0915x=-5490
x=$60,000 in bonds  earn 1320
x-10000=$50,000 in CDs, earn 1625
180000-2x=$60,000 in stocks earn 4380.  They add to $7325.