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Absolute value

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Absolute value

by beater » Wed Mar 18, 2009 7:12 pm
If x and y are integers and y = |x+3|+|4-x| , does y equal 7 ?

1) x < 4
2) x > -3

Can we solve this without substituting numbers?
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Source: — Data Sufficiency |

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by Ian Stewart » Wed Mar 18, 2009 7:17 pm
I explained a conceptual approach to the problem here:

www.beatthegmat.com/og-ds-absolute-valu ... 32674.html
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com

ianstewartgmat.com
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