To score 700+ on the GMAT, test takers must develop a strategy to answer the Quant questions in 2 minutes and Verbal questions in 1 minute & 20 seconds. Data sufficiency questions can be solved well within the 2minute mark, most likely in 1 minute and 30 seconds if the conditions and question are rephrased. Not all questions will be required to be rephrased but there are certain conditions where this technique is extremely useful, especially when concepts in Ratio & Proportion, Equations, Inequalities & Divisibility are tested.
Equations
This is the most common question type where rephrasing the conditions might be useful, especially in quadratic equations, and questions that require finding roots.
Let us look into a quadratic equation question type
For the following equations with positive roots, the value of k is greater than one
1) 3x^2 +5x + 2k = 0
2) (x+1)(3x+2) + 2k  2 = 0
1) Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient to answer the question asked.
2) Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient to answer the question asked.
3) BOTH...

Categories : Equations, Problem Solving In order to solve such equations, you need at least 2 distinct equations involving these unknowns. 
If Y < 0 and 1 < 1 + X/Y < 0, which must be true? 