SOLUTION: walt made an extra $8000 last year from a part time job. He invested part of his money at 6% and the rest at 9%. He maid a total of $570 how much was invested at 9%.
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Question 222220: walt made an extra $8000 last year from a part time job. He invested part of his money at 6% and the rest at 9%. He maid a total of $570 how much was invested at 9%. Answer by rfer(16322) (Show Source):