GMAT Two-Part Analysis strategies
Two-Part Analysis asks you to solve two related sub-questions in one question. These strategies cover the core principle of solving both parts from a shared setup, the trap of solving one part and assuming the other, and a step-by-step walkthrough you can run on every two-part item.
The core principle
Two parts, one answer pair. Two-Part Analysis presents a question with two columns and asks you to select one value for each column. The two parts are related, often by a shared setup or a constraint that links them. The skill is treating them as one problem with two outputs, not two independent questions. Solve the shared setup once, then derive both answers from it.
The most common trap
Solving one part and assuming the other
The two parts share a setup, but they are not the same question. A common error is to solve the first column, assume the second column is the complementary value, and move on without checking. The second part can ask for a different quantity, a different unit, or the inverse relationship. The answer choices for each column are drawn from the same pool, so the value that fits the first column may also appear as a trap in the second. Solve each part against the shared setup, then verify the pair is consistent.
Step-by-step strategy
When to use: any question that presents two columns and asks you to select one value for each.
- 1Read the full prompt and identify the shared setup that links both parts.
- 2Solve the setup once to get the relationship or value both parts draw from.
- 3Derive the first column's answer from the solved setup.
- 4Derive the second column's answer from the same setup, not from the first answer.
- 5Verify the two answers are consistent with the constraint in the prompt.
When not to use: when the two columns ask for unrelated quantities with no shared setup, treat each column as its own question and solve independently.
Related pages
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