Question 419077
<pre>
RATE%              INVEST              INCOME
   5                 p/2                0.05(p/2)
   4                 p/3                0.04(p/3)
   3.5             p-p/2-p/3=p/6        0.035(p/6)
TOTAL                                    530 
</pre>
{{{(0.05/2+0.04/3+0.035)p=530}}}

l.c.d. is 12

{{{12p(0.05/2+0.04/3+0.035/6)=530*12}}}

.
.
{{{(0.3+0.16+0.07)p=6360}}}

{{{0.53p=6360}}}

{{{highlight(p=12000)}}} the original amount invested among the three accounts.

6000 at 5%
4000 at 4%
2000 at 3.5%