BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

statist

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 344
Joined: Sat Nov 12, 2011 3:21 am
Thanked: 1 times
Followed by:2 members

statist

by sud21 » Thu Jan 12, 2012 3:00 am
In a certain test, how many of the 35 students in a certain class got a score less than 85?
1). The average score of all students is 85
2). The median score of all students is 85
Top
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 1239
Joined: Tue Apr 26, 2011 6:25 am
Thanked: 233 times
Followed by:26 members
GMAT Score:680

by sam2304 » Thu Jan 12, 2012 3:26 am
1). The average score of all students is 85
INSUFF. Average = 85. The set can have either all values as 85 or some less and some more than 85 to be the average. So #nos < 85 cannot be determined.
2). The median score of all students is 85
INSUFF. Same as above. The set can have all values as 85 or some less and some more than 85 but 85 is the 18th value in the set. So # nos < 85 cannot be determined.

Combining 1 & 2. With average and median as 85, the set can be consecutive integers with 85 as the middle value or all values are same. Again INSUFF.

IMO E.
Getting defeated is just a temporary notion, giving it up is what makes it permanent.
https://gmatandbeyond.blogspot.in/
Top
Post new topic Post Reply
• Page 1 of 1