Question 169484
a+b+c=6700 where a,b,c are amounts invested in bonds,balance,and aggessive respectively.
:
c=a+b-300...eq 2
.05a+.08b+.12c=619....eq 3

I will let you choose the method of solving this
I came up with a=$1500, b=$2000, and c=$3200

hope that helps