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Higher Average score?

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Higher Average score?

by h_jitendras » Tue May 11, 2010 6:09 pm
Two naval cadets - Robert and Steve- received the same evaluation in only one of the four areas.Each evaluation was on a scale of 1 to 10.

From which of the following statements can one determine whose average score was higher on the evaluation?

1. Robert graduated at the top of his class
2.Steve scored higher than Robert in two areas and neither cadet scored below 5 in any area
3.Steve's lowest score was less than or equal to Robert's highest score.
4.Robert received a score of 10 in three areas and Steve did not score higher than 8 in any area
5.Robert's highest score and Steve's lowest scores were in the same area.

Source - NOVA's GMAT Prep Course book

I worked out the answer to be D but the OA: C

Please help.
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by liferocks » Tue May 11, 2010 6:37 pm
I agree with the option D.
As per option C
let the scores of Steve are 1,2,3,4,5
and of Robert 6,6,6,6,6....clearly Robert's average score if higher that that of Steve's

Can you please post the official explanation?

BTW..this sounds more like DS than CR :P
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by ansumania » Tue May 11, 2010 10:32 pm
why can't it be E?

If the highest of A= lowest of B

=> avg. of B > avg. of A
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by liferocks » Wed May 12, 2010 2:06 am
ansumania wrote:why can't it be E?

If the highest of A= lowest of B

=> avg. of B > avg. of A
E says 'Robert's highest score and Steve's lowest scores were in the same area.' not 'Robert's highest score and Steve's lowest scores were same '..that mean if Robert's highest is in paper 1 then Steve's lowest is also in paper 1
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by bupbebeo » Wed May 12, 2010 2:27 am
h_jitendras wrote:Two naval cadets - Robert and Steve- received the same evaluation in only one of the four areas.Each evaluation was on a scale of 1 to 10.

From which of the following statements can one determine whose average score was higher on the evaluation?

1. Robert graduated at the top of his class
2.Steve scored higher than Robert in two areas and neither cadet scored below 5 in any area
3.Steve's lowest score was less than or equal to Robert's highest score.
4.Robert received a score of 10 in three areas and Steve did not score higher than 8 in any area
5.Robert's highest score and Steve's lowest scores were in the same area.

Source - NOVA's GMAT Prep Course book

I worked out the answer to be D but the OA: C

Please help.
In my opinion, the correct is D. as we can see the maximum grade Steve can get is 32 with 4 grades 8. According to the argument, there is only one area, Robert's grade and Steve's grade is the same. we have: the grade of Robert: 10 + 10 + 10 + a, the grade of Steave: 8+8+8+ a or 7+7+7+a or 6+7+5+a...... so forth, as we can see, with each value of a, we always have grade of Robert greater than grade of steave.

C cant be correct. Let take an example to prove it. let 10 is the highest score of Steave, according to the answer choice, the lowest score of Robert can be 10, 9 , 8, 7, 6........0. without knowing any other grade, how we can prove whose grade is greater.
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by ansumania » Wed May 12, 2010 5:38 am
liferocks wrote:
ansumania wrote:why can't it be E?

If the highest of A= lowest of B

=> avg. of B > avg. of A
E says 'Robert's highest score and Steve's lowest scores were in the same area.' not 'Robert's highest score and Steve's lowest scores were same '..that mean if Robert's highest is in paper 1 then Steve's lowest is also in paper 1
it all make sense now...how stupid of me......

thanks buddy
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by diebeatsthegmat » Wed May 26, 2010 8:20 am
h_jitendras wrote:Two naval cadets - Robert and Steve- received the same evaluation in only one of the four areas.Each evaluation was on a scale of 1 to 10.

From which of the following statements can one determine whose average score was higher on the evaluation?

1. Robert graduated at the top of his class
2.Steve scored higher than Robert in two areas and neither cadet scored below 5 in any area
3.Steve's lowest score was less than or equal to Robert's highest score.
4.Robert received a score of 10 in three areas and Steve did not score higher than 8 in any area
5.Robert's highest score and Steve's lowest scores were in the same area.

Source - NOVA's GMAT Prep Course book

I worked out the answer to be D but the OA: C

Please help.
answer should be D. how come it is C?
if robet's 3 areas = 10 and one of his area's score = one of steve's area's score and while steve has no score which is higher than 8... => robert score is 10 10 10 8 and suppose steve's score is 8888 thus robert score is always higher for sure
that is what i understood! how come it is C? impossible... did you review the answer wrong? maybe you typed it wrong????
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