Boyd Salzer, an unmarried individual, has $213,100 AGI consisting of the following items: Salary Interest income Dividend income Rental income from real property $ 178,000 4,000 12,650 18,450 Required: a. Compute Mr. Salzer's Medicare contribution tax. b. Compute the Medicare contribution tax if Boyd Salzer files a joint income tax return with his wife Harriet. Complete this question by entering your answers in the tabs below. Required A Required B Compute Mr. Salzer's Medicare contribution tax. (Round your answer to the nearest whole dollar amount.) Medicare contribution tax