Exercise 12-25 (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 $426,400. His additional Medicare tax is $ b. George and Shirley are married and file a joint return. During the year, George earns wages of $146,200, and $ hirley earns wages of $219,300. Their additional Medicare tax is $ c. Simon has net investment income of $48,760 and MAGI of $243,800 and files as a single taxpayer. Simon's additional Medicare tax is $ X. Feoback r Check My Work Two additional Medicare taxes are assessed on high-income individuals-a tax on wages and a tax on unearned income