What is the split on hourly rates for Contract Jobs?

Employer pays 100% of the hourly rate to Jobhuk. Jobhuk pays 15% of the hourly rate to Referrer and 80% of the hourly rate to candidate.

For Example:

Employer posts contract job and pays $100/hr to Jobhuk
Jobhuk Pays Referrer 15% = $15/hr
Jobhuk Pays Candidate 80% = $80/hr
Jobhuk takes 5% = $5/hr