<PRE><B>Question 112469</B>
An investment of $5000 is made at an annual simple interest rate of 5.3%. How much additional money must be invested at an annual simple interest rate of 8.5% so that the total interest earned is 6.5% of the total investment?
:
Let x = additional amt invested at 8.5%
Therefore:
The resulting amt = (x+5000)
:
The interest equation:
.053(5000) + .085x = .065(x + 5000)
:
Can you solve this now?</PRE>