Peter, Mary, and Edna took the same examination. Which of them received the highest score?
(1) There was a 10-point gap between Peter's score and Mary's score.
(2) There was an 8-point gap between Edna's score and Peter's score.
What's the best way to determine whether statement 1 is sufficient?
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
Peter, Mary, and Edna took the same examination. Which of th
This topic has expert replies
-
BTGmoderatorAT
- Moderator
- Posts: 426
- Joined: Tue Aug 22, 2017 8:48 pm
- Followed by:1 members
-
DavidG@VeritasPrep
- Legendary Member
- Posts: 2663
- Joined: Wed Jan 14, 2015 8:25 am
- Location: Boston, MA
- Thanked: 1153 times
- Followed by:128 members
- GMAT Score:770
Statement 1: we know nothing about Edna's score, so this can't possibly be sufficient on its ownardz24 wrote:Peter, Mary, and Edna took the same examination. Which of them received the highest score?
(1) There was a 10-point gap between Peter's score and Mary's score.
(2) There was an 8-point gap between Edna's score and Peter's score.
What's the best way to determine whether statement 1 is sufficient?
Statement 2: we know nothing about Mary's score, so this can't possible be sufficient on its own
Together: Case 1: Peter gets a 10, Mary a 0, and Edna, an 18. Edna received the highest score
Case 2: Peter gets a 10, Mary a 0, and Edna, a 2. Peter received the highest score.
Because the statements together do not give a single unique result, the answer is E
