Investment Income. A foundation invests $50,000 at simple interest, part at 7%, twice
Chapter 1, Problem 49(choose chapter or problem)
Investment Income. A foundation invests $50,000 at simple interest, part at 7%, twice that amount at 4%, and the rest at 5.5%. What is the most that the foundation can invest at 4% and be guaranteed $2660 in interest per year?
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