The law office of Lifelong Decisions wishes to employ two temporary paralegals, Kit and Kat, to draft legal documents for pending lawsuits. Kit can draft $20$ documents per day and earns $$150$ per day, while Kat can draft $30$ documents per day and earns $$300$ per day. Each paralegal must be employed at least $1$ day per week to justify their employment. If the law office has at least $110$ legal documents each week, you are to determine how many days per week the office should employ each paralegal to minimize its cots$.$