Can someone help me with this please I don’t get it

Ineed to know the answer to this algebra question.

Neoli is a nurse who works each day from 8: 00 am to 4: 00 pm at the blood collection centre. she takes 45 minutes for her lunch break. on average, it takes neoli 15 minutes to collect each sample and record the patient's details. on average, how many patients can neoli see each day?

Yo need asap pls ! markin da brainiest too !