Question: Jets Fans in a Dormitory

Rate this video: 
5

Comment on Jets Fans in a Dormitory

How did you get 5/12
gmat-admin's picture

Good question.

When we add the given fractions we get 7/12

So, up to that point, have have only accounted for 7/12 of the students. Since 7/12 + 5/12 = 12/12 = 1, we can conclude that, if 7/12 of the students are accounted for, then 5/12 of the students are NOT accounted for.

Does that help?

Hi,

I am yet not able to understand how you got 5/12.

Is there an other explaination?
gmat-admin's picture

When we add 1/3 + 1/6 + 1/12, we are determining the proportion of students who are Jets fans, Bears fans or Raiders fans.

1/3 + 1/6 + 1/12 = 7/12
So, 7/12 of the students are Jets fans, Bears fans or Raiders fans
In other words, 7/12 of the students are NOT Dolphins fans.
This means the REMAINING 5/12 of the students ARE Dolphins fans.

Does that help?

Cheers,
Brent

Add a comment

Ask on Beat The GMAT

If you have any questions, ask them on the Beat The GMAT discussion forums. The average response time is typically less than 30 minutes.

Change Playback Speed

You have the option of watching our videos at various speeds (25% faster, 50% faster, etc). To change the playback speed, click the settings icon on the right side of the video status bar.

Have a question about this video?

Post your question in the Comment section below, and we’ll answer it as fast as humanly possible.

Free “Question of the Day” emails!