To receive a driver's license, sixteen-year-olds at Culliver High School have to pass both a written and a practical

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To receive a driver's license, sixteen-year-olds at Culliver High School have to pass both a written and a practical driving test. Everyone has to take the tests, and no one failed both tests. If 30% of the 16 year-olds who passed the written test did not pass the practical, how many sixteen-year-olds at Culliver High School received their driver's license?

(1) There are 188 sixteen-year-olds at Culliver High School.

(2) 20% of the sixteen-year-olds who passed the practical test failed the written test.

Answer: C

Source: Manhattan GMAT