John, a single taxpayer, earns $140,000 in taxable income and $12,000 in interest from an investment in City of Denver Bonds. Using the U.S. tax rate schedule for year 2021, how much federal tax will he owe? What is his average tax rate? What is his effective tax rate? What is his current marginal rate? If John earned an additional $60,000 of taxable income, what is his marginal rate on this income? Round to two decimals.

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