Solve the problem.A retired couple has $170,000 to invest to obtain annual income. They want some of it invested in safe Certificates of Deposit yielding 7%. The rest they want to invest in AA bonds yielding 10% per year. How much should they invest in each to realize exactly $15,800 per year?
A. $140,000 at 10% and $30,000 at 7%
B. $120,000 at 7% and $50,000 at 10%
C. $130,000 at 7% and $40,000 at 10%
D. $130,000 at 10% and $40,000 at 7%
Answer: D
Mathematics
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