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data sufficiency

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sanyu4
 Post subject: data sufficiency
 Post Posted: Fri Feb 25, 2011 8:01 pm 
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Course Students


Posts: 12
Question from the Fractions Decimals and percents - 4th edition, guide 2: Page 21 Number 11:

The number A is a two-digit positive integer; the number b is the two digit positive integer formed by reversing the digits of A. If Q = 10B-A, what is the value of Q?

I do not understand the explanation in the book, can you give me an alternate explanation?

Thank you
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jnelson0612
 Post subject: Re: data sufficiency
 Post Posted: Sun Feb 27, 2011 7:38 pm 
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ManhattanGMAT Staff


Posts: 1857
sanyu, will you please add the two statements? This is a data sufficiency question and it will help the students who see this problem to have all the information. Once you do this someone will help you, thanks!

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Jamie Nelson
ManhattanGMAT Instructor
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