Solve the problem.A retired couple has $140,000 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 $12,500 per year?
A. $90,000 at 7% and $50,000 at 10%
B. $100,000 at 10% and $40,000 at 7%
C. $90,000 at 10% and $50,000 at 7%
D. $80,000 at 7% and $60,000 at 10%
Answer: C
Mathematics
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Mathematics