I recently was given an opportunity from someone to invest $10,000 into my blackjack career. Being a college student with a limited bankroll I'm looking to accept his offer since it can really get me going. At this time I am trying to write up a proposal for him but don't know what information to provide other than what the RoR is going to be. I would like to include how long it would take for me to double the $10,000 investment but don't know of a way to calculate that. I was wondering if anyone here knows of a way to calculate how long it would take, and also if there is any other information I should provide to this potential investor other than the risk of ruin? I am trying to give as much information as possible. I mainly play casinos in PA with standard PA rules but will start playing in NY in September.