Scot and Vidia, married taxpayers, earn $240,000 in taxable income and $5,000 in interest from an investment in City of Tampa bonds. (Use the U.S. tax rate schedule for married filing jointly). Required: a. If Scot and Vidia earn an additional $80,000 of taxable income, what is their marginal tax rate on this income? b. What is their marginal tax rate if, instead, they report an additional $80,000 in deductions? Note: For all requirements, round your answers to 2 decimal places. a. Marginal tax rate b. Marginal tax rate % % Schedule Y-1-Married Filing Jointly or Qualifying Widow(er) If taxable income is over: But not over: $ 20,550 $ 83,550 $ 0 $ 20,550 $ 83,550 $ 178,150 $ 340,100 $ 431,900 $ 431,900 $ 647,850 $340,100 The tax is: 10% of taxable income $2,055 plus 12% of the excess over $20,550 $ 178,150 || $9,615 plus 22% of the excess over $83,550 $30,427 plus 24% of the excess over $178,150 $69,295 plus 32% of the excess over $340,100 $98,671 plus 35% of the excess over $431,900 $ 647,850 - | $174,253.50 plus 37% of the excess over $647,850