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 $345,000. His additional Medicare tax is $ 6,803 X b. George and Shirley are married and file a joint return. During the year, George earns wages of $236,100, and Shirley earns wages of $354,150. Their additional Medicare tax is s 11,621 X C. Simon has net investment income of $49,600 and MAGI of $248,000 and files as a single taxpayer Simon's additional Medicare tax is $ 1,824 Feedback Check My Work Two additional Medic