GMAT Data Insights Quiz
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TWO-PART ANALYSIS
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A pharmaceutical company conducts a two-phase clinical trial. In Phase 1, 60%60\% of participants show positive response to treatment. In Phase 2, only participants who showed positive response in Phase 1 continue, and 75%75\% of these show continued positive response. If 180180 participants started Phase 1, and the company needs at least 9090 participants with positive responses in both phases for regulatory approval, how many additional Phase 1 participants would be needed if the current number falls short, and what is the current number of participants with positive responses in both phases?
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