Ken earns $40,000 and pays $8,000 in tax, while Alicia earns $60,000 and pays $18,000 in tax.
If Ken's income increases by $100, his tax increases by $41, but if Alicia's income increases by $100, her tax increases by $54.
What is the average tax rate and marginal tax rate that Ken pays and that Alicia pays?
Is this income tax fair?
Ken's average tax rate is____percent.
