Answer and Explanation:
The computation of the expected return and the exclusion amount is shown below:
Expected return is
= Received amount on a monthly basis × total number of months in a year × life expectancy
= $500 × 12 × 24.2
= $145,200
Now the exclusion amount is
= Purchase value of an annuity × Purchase value of an annuity ÷ expected return
= $90,000 × $90,000 ÷ $145,200
= $55,785