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Classwork eBook Exercise 13-25 (Algorithmic) (LO. 7) Compute the additional Medicare tax for the following taxpayers. If required, round your answers to the nearest dollar. a. Mario, who is single, earns wages of $547,400. His additional Medicare tax is $ 3,127 b. George and Shirley are married and file a joint return. During the year, George earns wages of $149,300, and Shirley earns wages of $223,950. Their additional Medicare tax is $ 1,109 c. Simon has net investment income of $58,000 and MAGI of $290,000 and files as a single taxpayer. Simon's additional Medicare tax is $ 288 X . Feedback Check My Work Two additional Medicare taxes are assessed on