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