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Is x+y<180?

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Is x+y<180?

by Max@Math Revolution » Wed May 25, 2016 5:36 pm
Is x+y<180?
1) Line a and line b are NOT parallel
2) r+q>180o

*An answer will be posted in 2 days.
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Source: — Data Sufficiency |
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by Max@Math Revolution » Sat May 28, 2016 6:45 pm
If we modify the original condition and the question, if line a and b are parallel, x+y=180. x+y<180? Is asking if line a and line b meets. This means r+q>180. Hence, the correct answer is B.
- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
 
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