SOLUTION: Equal amounts are invested at 4%, 7%, and 8% annual interest. If the three investments yield a total of $874 annual interest, find the total investment.

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Question 1099481: Equal amounts are invested at 4%, 7%, and 8% annual interest. If the three investments yield a total of $874 annual interest, find the total investment.
Answer by ikleyn(52799) About Me  (Show Source):
You can put this solution on YOUR website!
.
0.04x + 0.07x + 0.08x = 874.


Solve for x.