Final answer:
Without the specific IRS rules and thresholds, it's impossible to determine the portion of Social Security benefits that should be included in Norma's gross income from the given information.
Step-by-step explanation:
The question presents a scenario involving Norma's income and Social Security benefits and asks what portion of her Social Security benefits must be included in her gross income. To determine the portion of Social Security benefits that must be included in the gross income, the IRS formula for calculating taxable Social Security benefits needs to be applied. Since specific IRS rules and thresholds determine the taxable amount, and this information is not provided in the question, the portion cannot be determined from the given information.
In the absence of specific details regarding Norma's income, the IRS rules, and relevant thresholds, it is not possible to calculate the portion of her Social Security benefits that must be included in her gross income. The taxation of Social Security benefits depends on various factors, including an individual's total income, filing status, and specific IRS regulations.
The IRS provides a formula and income thresholds to determine the taxable portion of Social Security benefits. These thresholds and calculations are subject to change and are not universally applicable. Therefore, without the necessary information about Norma's total income and filing status, it is not feasible to ascertain the precise portion of her Social Security benefits that would be included in her gross income.