7.25 is the same as [tex]7 \frac{25}{100} [/tex] written as a mixed number. However, .25 is [tex] \frac{1}{4} [/tex] of 100.
In this case, while rewriting your mixed number, 7.25 is the same as [tex] 7\frac{1}{4} [/tex], so that would be your answer.
7.25 ⇒ 7 1/4