Given Data:
The salary of Clarissa is : $395 per week
The total amount Clarissa own the employment agency is 20% of the 4 weeks salery.
The total salary of employment agency in four week is,
Clarissa earn $1580 in her first four week.
The 20% of the $1580 is the amount Clarissa owns the agency.
The 20% of the $1580 is,
Thus, Clarissa has to pay $316 to the employment agency.