Answer Puzzles 2

The scientist John, sending the printed circuits, put a padlock on the box before wrapping it up. The scientist Janet, receiving the box in Tokyo, unwrapped the paper and put her padlock on the box. She wrapped it up again and returned it to London. John then unwrapped the paper, unlocked his padlock with his key and took it off the box. Having wrapped it up again, he sent it back to Tokyo. Janet then unwrapped the parcel and unlocked her own padlock, and was able to open the box. She took out the printed circuits and inserted them into her equipment.