Question 1067717
x@4%
9000-x@7%
.04x+(.07)(9000-x)=540
-0.03x=630=540
-0.03x=-90
3x=9000
x=$3000@4%=$120  ANSWER is $3000 in CD at 4%
9000-x=$6000@7%=$420
They sum to $540.