"one half" = [tex] \frac{1}{2} [/tex]
Your problem becomes this but you don't have to do this method to solve this problem: [tex] \frac{1}{2} * \frac{2}{1} * \frac{25}{1} [/tex]. So,
[tex] \frac{1}{2} ( \frac{2}{1} ) ( \frac{25}{1} ) \\ \frac{1}{2} ( \frac{2}{1} ) = 1 \\ \frac{1}{1} ( \frac{25}{1} ) = \frac{25}{1} \\ Answer: 25[/tex]
