How to Write an Algebraic Expression

The video tutorial addresses a standardized math test question requiring the creation of an algebraic expression to represent the total distance a gymnast walked over two days. On Saturday, the gymnast walked x miles, and on Sunday, half of that distance. The tutorial guides through the process of combining these distances into an expression, evaluates multiple-choice answers, and identifies the correct expression as x + x/2.

Why was choice A ruled out in the problem?

Explain why the correct answer is B.