Loan Shark Interest

What is a typical amount of interest for a loan shark to charge? Say someone is asking for a 150 Point loan, what amount of interest is expected? Do you take the number of days until they repay into account? I'm new to this so I'm just trying to get a feel for what is appropriate.

its all different for everybody,, dpends on the person, their payback record,, how well u know th em etc... how many points u can spare urself too at the time,, u jus th ave to kinda feel it out at first GL:)