A total of $4100 was invested, part of it at 5% interest and the remainder at 10%. If the total yearly interest amounted to $370, how much was invested at each rate?

Answer 1

If $x was invested at 5%, then the rest $(4100-x) was invested at 10%

So, just add up the interest, and you have

.05x + .10(4100-x) = 370

Now just find x ...

Answer 2

Thanks, Steve!

5%=800
10%=3,300