Question

Mr. and Mrs. Byrd have just retired and find that they need dollar-sign 9,000 per year to live on. Fortunately, they have a nest egg of dollar-sign 102,000 comma which they can invest in somewhat risky B-rated bonds at 9 % interest per year or in a well-known bank at 5 % per year. How much money should they invest in each so that they realize exactly dollar-sign 9,000 in interest income each year?

Answer 1

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