Diane's adjusted gross income for 2012 is $147,050.
We have these data:
Salary = $177,500
Alimony Paid = $28,300
The modified AGI to determine amount of interest deduction is:
= $177,500 - $28,300
= $149,200
For year 2022, the maximum deduction for interest, who filled as married jointly, on student loan ($2,500) begins after the Modified adjusted gross income reach $145,000 and up to $175,000
So, the maximum interest deduction availabale is:
= $2,500 - $2,500 * (($149,200 - $145,000) / $30,000)
= $2,150.
The adjusted gross income is then:
Modified AGI - Maximum interest deduction
= $149,200 - $2,150
= $147,050.