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In a certain medical group, Dr. Schwartz schedules
[#permalink]
15 May 2016, 18:05

Expert Reply

Question Stats:

In a certain medical group, Dr. Schwartz schedules appointments to begin 30 minutes apart, Dr. Ramirez schedules appointments to begin 25 minutes apart, and Dr. Wu schedules appointments to begin 50 minutes apart. All three doctors schedule their first appointments to begin at 8:00 in the morning, which are followed by their successive appointments throughout the day without breaks. Other than at 8:00 in the morning, at what times before 1:30 in the afternoon do all three doctors schedule their appointments to begin at the same time?

Indicate all such times.

A. 9:30 in the morning

B. 10:00 in the morning

C. 10:30 in the morning

D. 11:00 in the morning

E. 11:30 in the morning

F. 12:00 noon

G. 12:30 in the afternoon

H. 1:00 in the afternoon

_________________

Indicate all such times.

A. 9:30 in the morning

B. 10:00 in the morning

C. 10:30 in the morning

D. 11:00 in the morning

E. 11:30 in the morning

F. 12:00 noon

G. 12:30 in the afternoon

H. 1:00 in the afternoon

Practice Questions

Question: 16

Page: 64

Question: 16

Page: 64

_________________

Sandy

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Retired Moderator

Joined: **07 Jun 2014 **

Posts: **4804**

WE:**Business Development (Energy and Utilities)**

Re: In a certain medical group, Dr. Schwartz schedules
[#permalink]
15 May 2016, 18:07

3

Expert Reply

1

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Explanation

By examining the pattern of beginning times for the three types of appointments, you can see that the times will coincide when the number of minutes after 8:00 in the morning is a common multiple of 30, 25, and 50. The least common multiple of 30, 25, and 50 is 150, which represents 150 minutes, or 2.5 hours. So the times coincide every 2.5 hours after 8:00 in the morning, that is, at 10:30 in the morning, at 1:00 in the afternoon, and so on. The correct answer consists of Choices C and H.

_________________

Sandy

If you found this post useful, please let me know by pressing the Kudos Button

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By examining the pattern of beginning times for the three types of appointments, you can see that the times will coincide when the number of minutes after 8:00 in the morning is a common multiple of 30, 25, and 50. The least common multiple of 30, 25, and 50 is 150, which represents 150 minutes, or 2.5 hours. So the times coincide every 2.5 hours after 8:00 in the morning, that is, at 10:30 in the morning, at 1:00 in the afternoon, and so on. The correct answer consists of Choices C and H.

_________________

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Re: In a certain medical group, Dr. Schwartz schedules
[#permalink]
03 Sep 2018, 16:43

2

The numbers are 30, 25 and 50.

the common multiples of 30,25 and 50 are 150 min or 2 hours 30 min and 300 min or 5 hours

Time starts from 8:00. After 2.30 hr the time is 10.30 and after 5 hours it is 1.00 pm.

So the answer is C and H

the common multiples of 30,25 and 50 are 150 min or 2 hours 30 min and 300 min or 5 hours

Time starts from 8:00. After 2.30 hr the time is 10.30 and after 5 hours it is 1.00 pm.

So the answer is C and H

Re: In a certain medical group, Dr. Schwartz schedules
[#permalink]
22 Oct 2019, 09:41

i find the question rather senseless to be honest. Nowhere does it state that the times need to coincide..confusing

Re: In a certain medical group, Dr. Schwartz schedules
[#permalink]
03 Mar 2021, 06:24

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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Thanks to another GRE Prep Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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