Answer:
22%
Step-by-step explanation:
since taxable income is gross income - all possible deductions and and exemptions, we need to calculate Alice and Alan's tax bracket as married filing jointly for 2018.
The following table shows some of the tax brackets that were valid for 2018:
Rate Individuals Married Filing Jointly
10% Up to $9,525 Up to $19,050
12% $9,526 to $38,700 $19,051 to $77,400
22% $38,701 to $82,500 $77,401 to $165,000
24% $82,501 to $157,500 $165,001 to $315,000
32% $157,501 to $200,000 $315,001 to $400,000
We cannot determine their tax brackets if they wanted to file separately since we are only given a combined taxable income amount.