Bonus points

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Deepthi Subbu: Master | Next Rank: 500 Posts; Posts: 298; Joined: Tue Feb 16, 2010 1:09 amFollowed by: 1 member; Thanked: 2 times

by Deepthi Subbu » Wed Jan 12, 2011 9:06 pm

I dont remember the exact question and the one that am posting here is just a paraphrased version . However , the modified version is also similar to the original question .

Mrs.T's students are awarded bonus points for every question they answer correct . Bonus points = two times the ten's digit of the base score which is numbered from 10-99 . If Mrs.T's student answers one question correctly , is the bonus point awarded to the base score greater than 17% ?

a. The base score is numbered from 50 - 99.
b. Mrs.T awarded a total of 16 bonus points to the student .

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Source: Beat The GMAT — Data Sufficiency | Wed Jan 12, 2011 9:06 pm

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Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Wed Jan 12, 2011 11:53 pm

Deepthi Subbu wrote:I dont remember the exact question and the one that am posting here is just a paraphrased version . However , the modified version is also similar to the original question .

Mrs.T's students are awarded bonus points for every question they answer correct . Bonus points = two times the ten's digit of the base score which is numbered from 10-99 . If Mrs.T's student answers one question correctly , is the bonus point awarded to the base score greater than 17% ?

a. The base score is numbered from 50 - 99.
b. Mrs.T awarded a total of 16 bonus points to the student .

Try to post the exact question.
This problem does not seem correct to me.

The question stem says, "Mrs.T's students are awarded bonus points for every question they answer correct" and "If Mrs.T's student answers one question correctly..., this means the student has awarded one bonus point (unless there is some "at least" is missing from the later one). Now statement 2 says, Mrs.T awarded a total of 16 bonus points to the student..., which means the student must have answered exactly 16 question correctly (unless Mrs. T has done some mistake). Clearly statement 2 contradicts with the question stem.

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Night reader: Legendary Member; Posts: 1337; Joined: Sat Dec 27, 2008 6:29 pmFollowed by: 10 members; Thanked: 127 times

by Night reader » Thu Jan 13, 2011 12:25 am

Deepthi Subbu wrote:I dont remember the exact question and the one that am posting here is just a paraphrased version . However , the modified version is also similar to the original question .

Mrs.T's students are awarded bonus points for every question they answer correct . Bonus points = two times the ten's digit of the base score which is numbered from 10-99. If Mrs.T's student answers one question correctly , is the bonus point awarded to the base score greater than 17% ?

a. The base score is numbered from 50 - 99.
b. Mrs.T awarded a total of 16 bonus points to the student .

we set question "is the bonus point awarded to the base score greater than 17%" 17% of the base score is meant; the scores numbered from 10 to 99 - for each one correct score two times the ten's digit of the base score is awarded in bonus points, and we know that Mrs.T's student answers correctly one question.

st(1) 1 correct answer, the base score lies within {50...90}, the bonus points can not be assigned Not Sufficient.
st(2) 16 bonus points should mean the base score starts with the digit '8'. So base score = 8X where X is any digit from 0 to 9; 16/8X > 0.17 the answer - Yes, Sufficient

IOM B

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Anurag@Gurome: GMAT Instructor; Posts: 3835; Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members; Location: Milpitas, CA; Thanked: 1854 times; GMAT Score:770

by Anurag@Gurome » Thu Jan 13, 2011 12:45 am

@Night Reader: Your interpretation seems okay to me. Initially I take "16 bonus points" as 16 individual bonus points, so I concluded the student must answer 16 questions correctly. But I think that's a misinterpretation. I agree with your solution.

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ankur.agrawal: Master | Next Rank: 500 Posts; Posts: 261; Joined: Wed Mar 31, 2010 8:37 pmFollowed by: 3 members; Location: Varanasi; Thanked: 11 times

by ankur.agrawal » Thu Jan 13, 2011 1:08 am

Night reader wrote:
Deepthi Subbu wrote:I dont remember the exact question and the one that am posting here is just a paraphrased version . However , the modified version is also similar to the original question .

Mrs.T's students are awarded bonus points for every question they answer correct . Bonus points = two times the ten's digit of the base score which is numbered from 10-99. If Mrs.T's student answers one question correctly , is the bonus point awarded to the base score greater than 17% ?

a. The base score is numbered from 50 - 99.
b. Mrs.T awarded a total of 16 bonus points to the student .
we set question "is the bonus point awarded to the base score greater than 17%" 17% of the base score is meant; the scores numbered from 10 to 99 - for each one correct score two times the ten's digit of the base score is awarded in bonus points, and we know that Mrs.T's student answers correctly one question.

st(1) 1 correct answer, the base score lies within {50...90}, the bonus points can not be assigned Not Sufficient.
st(2) 16 bonus points should mean the base score starts with the digit '8'. So base score = 8X where X is any digit from 0 to 9; 16/8X > 0.17 the answer - Yes, Sufficient

IOM B

Hi Night reader. Agree with ur STatement 2.

But In statement 1, 1 correct answer & the base score lies within (50...90), So:

If we take base no as 55 say then: tens Digit=5 ; Bonus pt =5*2=10. Now 10/55=18.18%. Bur for say we take 59. Tens digit=5. Bonus=5*2=10. Now 10/59=16.94. < or equal to 17(approx). But the question asks us : Is the bonus point awarded to the base score greater than 17% ? Clearly we dont have a clear answer & therefore 1st statement is insufficient.'

Ur statement :st(1) 1 correct answer, the base score lies within {50...90}, the bonus points can not be assigned :

Did not get this. Why cant u assign the bonus pts.

Am i missing sumthing. Pls clarify

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Night reader: Legendary Member; Posts: 1337; Joined: Sat Dec 27, 2008 6:29 pmFollowed by: 10 members; Thanked: 127 times

by Night reader » Thu Jan 13, 2011 1:49 am

@ankur.agrawal: to assign the bonus points we need to know the first digit of the base score; the base score is not defined in st(1) it lies within {50-99} interval. If bases score is 59 then the bonus points are 10 which is less than 17%; if the base score is 99 then the bonus points are 18 which is greater than 18%.

hope this helps.

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ankur.agrawal: Master | Next Rank: 500 Posts; Posts: 261; Joined: Wed Mar 31, 2010 8:37 pmFollowed by: 3 members; Location: Varanasi; Thanked: 11 times

by ankur.agrawal » Thu Jan 13, 2011 2:04 am

Night reader wrote:@ankur.agrawal: to assign the bonus points we need to know the first digit of the base score; the base score is not defined in st(1) it lies within {50-99} interval. If bases score is 59 then the bonus points are 10 which is less than 17%; if the base score is 99 then the bonus points are 18 which is greater than 18%.

hope this helps.

Yes dats wat i was expecting.

Regards,Ankur

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