Mr. Erwin's marginal tax rate on ordinary income is 37 percent. His $958,000 AGI included a $24.900 net long-term capital gain and $37,600 business income from a passive activity. Use Individual tax rate schedules and Tax rates for capital gains ond qualified dividends. Required: a. Compute Mr. Erwin's income tax on the $62,500 investment income from these two sources. b. Compute Mr. Erwin's Medicare contribution tax if the $62,500 is his net investment income for the year. What is Mr. Erwin's marginal tax rate on long-term capital gain and on passive activity income? Complete this question by entering your answers in the tabs below. Required A Required Compute Mr. Erwin's income tax on the $62,500 Investment income from these two sources Income tax