Today's brain puzzle

Another gray dreary, drippy day here today. And I have a TON of housework to do (can you say muddy paw prints? I can....)

So fresh from my fun new "don't let your brain go to mush" calendar we have today's puzzle:

Jim is four times as old as Jerry. In four years, Jerry will be half as old as Jim is now. Two years ago, Jim was seven times as old as Jerry.

How old are they now?

Feel free to leave your guess in the comments. :) I'll post the answer this afternoon!

Update: Today's correct answer was provided by bigdocmcd!