A math teacher gave her students two tests. On the first test, 80% of the class passed the test, but only 30% of the class passed both tests.

What is the probability that a student passes the second test, given that they passed the first one?

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Guest

22 August, 16:22

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Mike Knight · Answer 1

55% because you add 80% and 30% which is 110% and divide that by 2.

A math teacher gave her students two tests. On the first test, 80% of the class passed the test, but only 30% of the class passed both tests.What is the probability that a student passes the second test, given that they passed the first one?