SOLUTION: Patty Wack had $900. She invested part of it at 12% and the rest at 9%. If her total annual return was $96, how much did she invest at each rate? -----at

Question 128855: Patty Wack had $900. She invested part of it at 12% and the rest at 9%. If her total annual return was $96, how much did she invest at each rate?
-----at 12% -----at 9%
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
If she invested x dollars at 12%, then she invested 900 - x dollars at 9%, so:

So she invested $500 at 12% and the rest, $400 at 9%.

Check answer:

And

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