Source: Official Guide Revised GRE 1st Ed. Part 6; Set 2; #5


Among the 9,000 people attending a football game

Among the 9,000 people attending a football game at College C, there were x students from College C and y students who were not from College C. Quantity A : The number of people attending the game who were not students Quantity B : 9,000-x-y Quantity A is greater., Quantity B is greater., The two quantities are equal., The relationship cannot be determined from the information given.

1 Explanation


Gravatar Chris Lele, Magoosh Tutor

Oct 7, 2012 • Comment

Ismail Nooraddini

This remains nebulous. If there were 9000 people attending the game, and x is the number of students from college, and y the number of students not from the college, then this formula does not answer the question. In fact Quantity B would be Zero.

Lets try something out

9000 students
x = students 5000
y = non-students 4000

# of people attending game who were not from college c

9000-5000-4000 then no one would be at the game. But Quantity A is asking for those who were not students.

So wouldn't it be 9000 - 4000, or 5000 students attended the game who were students. This is greater than B, which is Zero.

Mar 12, 2016 • Reply

Cydney Seigerman, Magoosh Tutor

Hi Ismail :)

In this question, y is not the number of non-students at the game but rather the number of students who are not from College C. This is an important distinction to make! Both x and y therefore represent quantities of students. For that reason, we need to subtract both x and y from 9000 (the total number of people at the game) to determine the number of non-students at the game.

I hope this clears up your doubts!

Mar 14, 2016 • Reply

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