Top Pair Holds Up What % of the Time? Pocket Overpair?

[Dan Mezick]

If one of you can describe the solution and answers to these two post-flop percentage questions, I'd be much obliged. Providing the solution will help me cut down on these type of questions in the future (in theory)....

Thanks

Question #1
What is the percentage of the time top pair holds up if it is split, and JJ or higher, after the flop? Assume a kicker of 10 or higher.

Question #2
What percentage of the time will an overpair to the flop win?