Answer:
$220,000
Step-by-step explanation:
Calculation to determine How much income from self-employment did Samuel earn from STU
Using this formula
Income from self-employment =Guaranteed payment received+(Interest rate*Ordinary income)
Let plug in the formula
Income from self-employment=$120,000+(25%*$400,000)
Income from self-employment=$120,000+$100,000
Income from self-employment=$220,000
Therefore the amount of income from self-employment that Samuel earn from STU is $220,000