A divergent boundary is where two plates are moving away from each other. They are mostly found at oceanic spreading centers. The most well known one would be the Mid-Atlantic Ridge located in the center of the Atlantic Ocean. I think you mean a divergent boundary.
He could give each of his children a third of what stamps he owns. So then you would divide 45 by 3 to get how many each child would get.
The answer to your question below I think is Great Dividing Range and Western Plateau
