What are the challenges faced when allocating overhead costs to products? Can these challenges identified be overcome by using ABC? Your answer should INCLUDE an explanation of the implications of the hierarchy of overhead costs and activities.

A lot of information is missing, so I looked for a similar question that can hopefully serve as an example:

Lily's gross pay was $4,500 last year. The federal income tax withholding from her pay was 10% of her gross pay.

As Lily files her taxes, she learns that her federal total tax due ends up being $244. According to her Federal income tax withheld, how much of a tax refund can she expect back?

Lily's tax withholdings = $4,500 x 10% = $450

Lily's tax liability = $244

tax refund = $450 - $244 = $206

When your tax withholdings are higher than your tax liability, the IRS should refund the difference since the government owes you money.