Question

you work in a dental office and need to schedule an appointment for a patient. the patient needs to have a tooth prepared for a crown, which requires 150 minutes. how many hours do you need to schedule for this patient?
a 1.5
b 2.5
c 15
d 25
e 90

Explanation:

Step1: Understand the problem

The patient needs a tooth prepared for a crown, which takes 90 minutes. We need to find how many hours that is, so we convert minutes to hours.

Step2: Convert minutes to hours

We know that 1 hour = 60 minutes. So to convert 90 minutes to hours, we divide 90 by 60: $\frac{90}{60} = 1.5$ hours. Wait, no, wait—wait, maybe I misread. Wait, the options: A is 1.5, E is 90. Wait, no, the problem says "how many hours do you need to schedule". Wait, 90 minutes is 1.5 hours? Wait, no, 60 minutes is 1 hour, 30 minutes is 0.5 hours, so 90 minutes is 1.5 hours? But wait, maybe the procedure time is 90 minutes, so the appointment time needed is 90 minutes, but the question is in hours? Wait, no, let's check the options. Wait, the options are A.1.5, B.2.5, C.15, D.25, E.90. Wait, maybe the problem is that the procedure takes 90 minutes, so the appointment time is 90 minutes, but if we convert to hours, 90 minutes is 1.5 hours? But that seems too short. Wait, maybe I misread the time. Wait, maybe the procedure is 90 minutes, so the appointment duration is 90 minutes, which is 1.5 hours. So the answer would be A? But let's re-express. Wait, 90 minutes divided by 60 minutes per hour is 1.5 hours. So the answer is A.1.5.

Answer:

A. 1.5