Some students pass around a box of candy containing 25 pieces.Kendra took the first piece of candy. Each child takes a piece of candy as the box is passed around. Bob also gets the last piece and may have more than the first piece. How many children are seated around the table?
You haven't given us enough information to answer this question.
We know that there are 25 pieces and Bob gets the last piece and may get more.
One of the problems with your question is the word "also." Bob ALSO gets the last piece doesn't make any sense in this statement.
In order to find the number of children seated around the table, we need to know how many pieces of candy each child takes as the box is passed around.
Let's assume that each child takes only one piece of candy. Since Kendra took the first piece, there are 24 pieces of candy left. Bob, who gets the last piece, will be the 25th child taking a piece of candy.
Therefore, there are 25 children seated around the table.