im, age 50, and Martha, age 49, are married with three dependent children. They file a joint return for 2018. Their income from salaries totals $49,500, and they received $10,125 in taxable interest, $5,000 in royalties, and $3,000 in other ordinary income. Jim and Martha's deductions for adjusted gross income amount to $3,200, and they have itemized deductions totaling $18,200. Calculate the following amounts: a. Gross income b. Adjusted gross income c. Itemized deduction or standard deduction amount . Deduction for exemptions e. Taxable income . Income tax liability (Do not consider the alternative minimum tax covered in Chapter 6 or any credits.)