Answer:
$2400 in A rated bond and $3000 in B rated bond.
Step-by-step explanation:
We have been given that Maria has recently retired and requested an extra $444.00 per year in income.
We can represent this information in an equation as:
She has $5400 to invest in an A-rated bond that pays 10% per annum or a B-rated bond paying 6% per annum.
From equation (1), we will get:
Substitute this value in equation (2):
Therefore, Maria should invest $2400 in A-rated bond.
Substitute in equation (1):
Therefore, Maria should invest $3000 in B-rated bond.