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In college M the average
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09 May 2015, 11:22
09 May 2015, 11:22
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In college M the average (arithmetic mean) number of students per course is 30 and the ratio of the number of students to the number of faculty is 20 to 1.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Quantity A |
Quantity B |
The total number of students in College M |
600 |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Kudos for the right answer and explanation
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: GRE Math Challenge #103
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12 May 2015, 08:40
12 May 2015, 08:40
2
sandy wrote:
In college M the average (arithmetic mean) number of students per course is 30 and the ratio of the number of students to the number of faculty is 20 to 1.
Quantity A: The total number of students in College M
Quantity B: 600
Quantity A: The total number of students in College M
Quantity B: 600
Each piece of information is insufficient to determine the total number of students.
The average (arithmetic mean) number of students per course is 30
To determine the number of students, we need to know the number of courses.
The ratio of the number of students to the number of faculty is 20 to 1
To determine the number of students, we need to know the number of faculty.
Consider these two possible cases:
Case #1: There are 3 faculty members, who teach a total of 2 courses. This means there are 60 students in College M, in which case Quantity B is greater.
Case #2: There are 300 faculty members, who teach a total of 200 courses. This means there are 6000 students in College M, in which case Quantity A is greater.
Answer:
Show: ::
D
Cheers,
Brent
Re: GRE Math Challenge #103-In college M the average
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13 Dec 2016, 12:26
13 Dec 2016, 12:26
i cant understand this solution, can anybody explain this in easy process please?
