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Updated on: 28 Apr 2020, 07:59
Originally posted by GMATinsight on 22 Apr 2020, 00:14.
Last edited by Bunuel on 28 Apr 2020, 07:59, edited 3 times in total.
Last edited by Bunuel on 28 Apr 2020, 07:59, edited 3 times in total.
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E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
95% (00:53) correct
5%
(01:17)
wrong
based on 1220
sessions
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There are 2 groups of students who took a history test. Was the average (arithmetic mean) score of the students in Group A higher than the average score of the students in Group B who took the test?
(1) Of the students who took the test, 10 were in Group A and 12 were in Group B.
(2) On the test, the highest score achieved was achieved by a Group B student and the lowest score achieved was achieved by a Group A student.
DS50241.02
(1) Of the students who took the test, 10 were in Group A and 12 were in Group B.
(2) On the test, the highest score achieved was achieved by a Group B student and the lowest score achieved was achieved by a Group A student.
DS50241.02
22 Apr 2020, 01:34
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GMATinsight
The video solution that explains every detail is as mentioned below:
Answer: Option E
The links to other new OG 2021 Questions are in signature.
General Discussion
22 Apr 2020, 02:28
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Assume number of students in Group A Is 'x' and in Group B is 'y'
Sum of scores of students of A = A; Sum of scores of students of B=b
average (arithmetic mean) score of the students in Group A = A/ x
average (arithmetic mean) score of the students in Group A = B/ y
We need Value of A,x, B and y or the value of A/x and B/y to compare the averages of 2 groups.
Statement 1 - We get the value of x and y. We have no idea about A and B
Insufficient
Statement 2- We have no idea about A,B, x or y
Insufficient
Combining both statements
We still don't have values of A and B
Insufficient
E
Sum of scores of students of A = A; Sum of scores of students of B=b
average (arithmetic mean) score of the students in Group A = A/ x
average (arithmetic mean) score of the students in Group A = B/ y
We need Value of A,x, B and y or the value of A/x and B/y to compare the averages of 2 groups.
Statement 1 - We get the value of x and y. We have no idea about A and B
Insufficient
Statement 2- We have no idea about A,B, x or y
Insufficient
Combining both statements
We still don't have values of A and B
Insufficient
E
GMATinsight
