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OA wrong?
Source: Beat The GMAT — Data Sufficiency |
GMAT/MBA Expert
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Ian Stewart
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Where did you get the OA? Definitely wrong - should be C. From each statement, we get two different values of x (in statement 1, x can be 11 or -17, and in statement 2 x can be 11 or -15), each of which gives a different value for |x+7|. Combined, x must be 11, so |x+7| = 18.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com
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