Question 1153514
.
<pre>

There are two factors in this problem that cause raising the interest.


One factor is the ratio of time periods  {{{24/16}}} = {{{3/2}}}.


The other factor is the ratio of initial deposits  {{{6500/4000}}} = {{{65/40}}} = {{{13/8}}}.


Therefore, the interest in the second case is  {{{20.80*(3/2)*(13/8)}}} = 50.70.    <U>ANSWER</U>
</pre>