Overlapping Sets - Request Detailed Explanation to the sol.

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To receive a driver 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 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.

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by DavidG@VeritasPrep » Tue Sep 29, 2015 7:20 am
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