The Records (Logic Brainteaser Puzzle)

Jack said, ‘if I had one of your records, I’d have as many you.’ Bob said, ‘If I had one of yours, I’d have twice as many as you!’ How many records had each?

Clue for the Puzzle: Try out one or two possible answers. For example, suppose Jack had three records, and Bob five. Then if Bob gives him one, each will have four. But if Jack gives one to Bob, he has six and Jack has only two. So that will not work. Try another pair of numbers in the same way.

Answer for the Puzzle: Jack has five records and Bob has seven.