Question 1192523
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The probability that an international flight leaving the us is delayed in departing is .31 
the probability that an international flight leaving the us is a transpacific flight is .62 
the probability that an international flight leaving the us is a transpacific flight and is delayed in departing is .15
what is the probability that an international flight leaving the us is delayed 
given the flight is a transpacific flight
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<pre>
Let A be the event that "an international flight leaving the us is delayed in departing".

    P(A) = 0.31  (given).



Let B be the event that "an international flight leaving the us is a transpacific flight".

    P(B) = 0.62  (given).



The event that "an international flight leaving the us is a transpacific flight and is delayed 
in departing"  is the intersection (A and B).  The probability  P(A and B) = 0.15  (given).   



They want you calculate the conditional probability  P(A | B). 



By the definition, this conditional probability is  P(A | B) = {{{P(A_and_B)/P(B)}}} = {{{0.15/0.62}}} = 0.2419  (rounded).    <U>ANSWER</U>
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Solved (with the complete mantra attached).