Asked by Steph

A total of $700 was split into two investments. Part paid 9% and the remainder paid 6%. If the annual interest from the two investments was $57.00, how much was invested at each rate?
Answered by Steve
If x was at 9%, then the rest (700-x) was at 6%. So, add up the interest:

.09x + .06(700-x) = 57
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