Answer:
$24,976
Explanation:
We know that the average annual salary for a Medical Assistant was $31,220.
So if the Medical Assistants' salary puts them in the 20% income tax bracket, we can find out the net income, after all the taxes are taken out.
If 20% of the Medical Assistants' salary goes to the income tax then the remaining (100-20=) 80% must be his net income.
So calculating the 80% of his annual salary to find his net income:

Therefore, a Medical Assistants' net income is $24,976.