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655-705 (Hard)|   Graphs|   Non-Math Related|               
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Vubar
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GMATCoachBen
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GMAT Focus 1: 775 Q87 V90 DI88 (Online)
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mmdfl
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egmat
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Active GMAT Club Expert! Tag them with @ followed by their username for a faster response.
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­Here is a detailed video solution for this interesting question. See how this question can be solved in the test environment using "Owning the Dataset" approach.


Let us know if you have any questions.­
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This question is hard beacuse of its graph trap. i.e the temperature is increasing in the reverse order from right to left and the scale is doubling on every point.
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watch Gmat NINJA video. its there
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