Suppose that the income tax in a certain nation is computed at a flat rate of 5%, but no tax is levied above $50,000 in taxable income. Taxable income, in turn, is calculated as the individual's income minus $10,000 (i.e., everyone gets a $10,000 deduction). For each of the following three individuals/workers, calculate their average tax rate and marginal tax rate. Make sure to write tax rates as percentages and where necessary, round to two decimal places.

1.) A part-time worker with an annual gross income of $9,000: average tax rate is ______% and marginal tax rate is_______%.

2.) A retail salesperson with annual income of $45,000: average tax rate is_______% and marginal tax rate is________%

3.) An advertising executive with annual income of $600,000: average tax rate is______% and marginal tax rate is________%