One Safe Investment Pays 10% Per Year, and a More

Multiple Choice

One safe investment pays 10% per year, and a more risky investment pays 18% per year. A woman who has $145,400 to invest would like to have an income of $20,000 per year from her investments. How much should she invest at each rate? ​

A) She should put $40,712 in the safe investment and $26,172 in the risky investment.​
B) She should put $18,175 in the safe investment and $32,715 in the risky investment.
C) She should put $14,540 in the safe investment and $104,688 in the risky investment.
D) She should put $77,150 in the safe investment and $68,250 in the risky investment.
E) She should put $47,982 in the safe investment and $40,712 in the risky investment.