Jim, 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.