Money Available Soybeans Corn Cultivation cost per acre $40 $60 $1800 Labor cost per acre $60 $60 $2400 Profit per acre $200 $250 55. Investment Strategy An investment broker wants to invest up to $20,000. She can purchase an AAA bond yielding a 10% return on the amount invested, and she can purchase a BB bond yielding a 15% return on the amount invested. She wants to invest at least as much in the AAA bond as in the BB bond. She will also invest at least $5000 in the AAA bond and no more than $8000 in the BB bond. How much should she invest in each type of bond to maximize her return