Final answer:
To maintain a nurse to patient ratio of 1:25 for 325 patients, the hospital needs 13 nurses.
Step-by-step explanation:
The problem involves determining the number of nurses required at a hospital based on a given nurse to patient ratio. To find out how many nurses are needed for 325 patients with a ratio of 1:25, we divide the number of patients by the ratio. So, we calculate 325 patients divided by 25 patients per nurse, which equals 13 nurses. This is the number needed for this ratio to be maintained.