All geologists must pass a written test and a field test to become licensed. If 70% of geologists pass the written test

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All geologists must pass a written test and a field test to become licensed. If 70% of geologists pass the written test and 90% of geologists pass the fieldtest, what percent pass both tests?

(1) 10% did not pass either test.

(2) 20% passed only the field test.


OA D

Source: Veritas Prep
Source: — Data Sufficiency |