An investment firm recommends that a client invest in bonds rated? AAA, A, and B. The average yield on AAA bonds is 4?%, on A bonds 5?%, and on B bonds 8?%. The client wants to invest twice as much in AAA bonds as in B bonds. How much should be invested in each type of bond under the following? conditions?
A. The total investment is ?$27,000 and the investor wants an annual return of ?$1,410 on the three investments.
B. The values in part A are changed to ?$44,000 and ?$2,300?, respectively.