an investment firm recommends that a client invest in bonds rated AAA, A and B. the average yield on AAA bond is 4%, on A binds 6%, and on B bonds...

an investment firm recommends that a client invest in bonds rated AAA, A and B. the average yield on AAA bond is 4%, on A binds 6%, and on B bonds 11%. 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 $9,000 and the investor wants an annual return of $560 on3 Investments. B) the values in part A are changed to $27,000 and $1,680 respectively.