SOLUTION: A QDA instructor gave a class two tests. 25% of the class passed both tests and 42% passed the first test. What percentage of those who passed the first test also passed the second

Question 40095: A QDA instructor gave a class two tests. 25% of the class passed both tests and 42% passed the first test. What percentage of those who passed the first test also passed the second test?
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
To make this a bit easier to see, imagine there were 100 students in the class.
Thus 42 passed the first test, and 25 passed both. Thus 25 of the 42 who passed the first test also passed the second test...that percentage is
25/42 = 59.5%
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