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Halfway through the season, Antonio’s scoring average

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4756
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1668 [0], given: 396

CAT Tests
Halfway through the season, Antonio’s scoring average [#permalink] New post 28 Dec 2016, 15:13
Expert's post
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Question Stats:

28% (00:51) correct 71% (01:10) wrong based on 7 sessions
Halfway through the season, Antonio’s scoring average per game was 20% higher than David’s. The two scored the same number of points in the second half of the season.

Quantity A
Quantity B
90% of Antonio’s scoring average for the whole season
David’s scoring average for the whole season


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.





Drill 2
Question: 11
Page: 316-317
[Reveal] Spoiler: OA

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Sandy
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1 KUDOS received
GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4756
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1668 [1] , given: 396

CAT Tests
Re: Halfway through the season, Antonio’s scoring average [#permalink] New post 28 Dec 2016, 15:34
1
This post received
KUDOS
Expert's post
Explanation


Plug in some real numbers to compare quantities. For example, plug in 10 for the number of games in the season. For the first 5 games of the season, try an average of 10 points for David (for a total of 50 points), which makes an average of 12 points for Antonio (for a total of 60 points).

Next, try a total of 0 points for each player for the second half of the season; now Antonio’s average for the season is 6 points, and David’s is 5. Because 90% of 6 is 5.4, Quantity A is greater, so eliminate choices (B) and (C).

Finally, try a total of 100 points for each player for the second half of the season; now Antonio has scored a total of 160 points in 10 games, for an
average of 16 points, and David has scored a total of 150 points in 10 games, for an average of 15 points. Because 90% of 16 is 14.4, Quantity B is now greater, so eliminate choice (A), and you’re left with choice (D).


Hence option D is correct.
_________________

Sandy
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Re: Halfway through the season, Antonio’s scoring average   [#permalink] 28 Dec 2016, 15:34
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Halfway through the season, Antonio’s scoring average

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