Write the system of equations only Do not solve 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 8 and on B bonds 12 The client wants to invest twice as much in A bonds as in B bonds How much should be invested in each type of bond if the total investment is 24 000 and the investor wants an annual return of 1740 on the three investments Let x be the number of AAA bonds y the number of A bonds and z the number of B bonds Ox y z 24 000 4x 8y 12z 174 000 y 2z 0 Ox y z 24 000 4x 8y 12z 17 400 y 2z 0 O x y z 24 000 4x 8y 12z 174 000 2y z 0 O x y z 24 000 4x 8y 12z 174 000 x 2z 0