Two teams, $X$ and $Y$, played against each other in a

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AAPL: Moderator; Posts: 2636; Joined: Sun Oct 29, 2017 2:08 pmFollowed by: 2 members

by AAPL » Mon Sep 16, 2019 4:10 am

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Two teams, $X$ and $Y$, played against each other in a tournament for the championship. In the tournament the team that scored the greater number of points in a game won that game. If the first team to win 4 games became the champion, did team $X$ become the champion?

1) In the tournament, team $X$ scored more than twice as many points as team $Y$.
2) The championship was decided after five games.

OA E

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Source: Beat The GMAT — Data Sufficiency | Mon Sep 16, 2019 4:10 am

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Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members; Location: Vancouver, BC; Thanked: 5254 times; GMAT Score:770

by Brent@GMATPrepNow » Mon Sep 16, 2019 5:25 am

AAPL wrote:GMAT Paper Tests

Two teams, $X$ and $Y$, played against each other in a tournament for the championship. In the tournament the team that scored the greater number of points in a game won that game. If the first team to win 4 games became the champion, did team $X$ become the champion?

1) In the tournament, team $X$ scored more than twice as many points as team $Y$.
2) The championship was decided after five games.

OA E

Given: In the tournament the team that scored the greater number of points in a game won that game. The first team to win 4 games became the champion

Target question: Did team X become the champion?

When I SCAN the two statements, they both feel insufficient, AND I'm pretty sure I can identify some cases with conflicting answers to the target question. So, I'm going to head straight to......

Statements 1 and 2 combined
There are several values of scenarios that satisfy BOTH statements. Here are two:
Case a: Team X wins first game 100-0, and then team Y wins each of the next 4 games (1-0). So, Team X's total points = 100, and Team Y's total points = 4. This meets both Statements 1 and 2. In this case, the answer to the target question is Team X did NOT win the championship
Case b: Team Y wins first game 1-0, and then team X wins each of the next 4 games (1-0). So, Team X's total points = 4, and Team Y's total points = 1. This meets both Statements 1 and 2. In this case, the answer to the target question is Team X DID win the championship
Since we cannot answer the target question with certainty, the combined statements are NOT SUFFICIENT

Answer: E

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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