1963 TMTA High School Algebra I Contest Problem 37
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Problem
A man has 
invested at 
and 
at 
The annual interest on the investments totals 
Find the 
rate.
Solution
Plug in each of the answer choices. We see that the right answer is 
![\[100(4/3000)+(5/2000)=220\]](http://latex.artofproblemsolving.com/1/6/f/16fc6efc34767ce8df64f986b6887d400b5fa685.png)
See Also
| 1963 TMTA High School Mathematics Contests (Problems) | ||
| Preceded by Problem 36 |
TMTA High School Mathematics Contest Past Problems/Solutions | Followed by Problem 38 |
