10.045 You invest in AAA-rated bonds, A-rated bonds, and

Last updated: 7/15/2022

10.045 You invest in AAA-rated bonds, A-rated bonds, and B-rated bonds. The average yields are 4.5% on AAA bonds, 5% on A bonds, and 9% on B bonds. You invest twice as much in B bonds as in A bonds. Let x, y, and z represent the amounts invested in AAA, A, and B bonds, respectively. X + y + z = (total investment) 0.045x+0.05y + 0.09z = (annual return) 2y- Z = 0 MY NOTES Use the inverse of the coefficient matrix of this system to find the amount invested in each type of bond for the given total investment and annual return. (Round your answers to the nearest cent.) Total Investment Annual Return $12,700 $815 amount invested in AAA-bonds $ amount invested in A-bonds $ amount invested in B-bonds $ PRACTICE ANOTHER