Question 1115269
<pre>
         AMOUNT IN ACCOUNT      RATE(%)        INTEREST
               x                 12             0.12x
              25000-x-2x          7             0.07(25000-x-2x)
               2x                 6             0.06*2x

TOTALS       25000                              1945
</pre>

{{{0.12x+0.07(25000-x-2x)+0.06*2x=1945}}}

-

{{{12x+7(25000-3x)+6*2x=194500}}}

{{{24x+7*25000-21x=194500}}}

{{{3x=194500-7*25000}}}

{{{3x=19500}}}

{{{highlight(x=6500)}}}

6500 at 12%
13000 at 6%
5500 at 7%