Odd experience this weekend

[Rottersod]

I was over at the bike playing some Pan9 this weekend and 3 times a different girl came up to me and started chatting with me and whispered that she needed some cash and when I looked straight at her she smiled and said we could go out to my car. Are these girls working together? They seemed pretty young (mid 20's - early 30's is my guess), and fairly good looking. I've seen one of them around before (I think her name is Michelle) but not the other 2. I was surprised because it seemed so blatant - right up at the table. In the past I've gotten hints from girls who I've struck up conversations with and some outright propositions when we were walking but 3 girls in one day?