The probability that an airplane flight departs on time is 0.89.
the probability that a flight arrives on time is 0.87.
the probability that a flight departs and arrives on time is 0.81.
the probability that a flight departed on time given that it arrives on time is

The solution to the problem is as follows:

In a universe of 100 flights- 

Probability of successful departure = 89/100. 

Probability of successful arrival = 87/100. 

Therefore, the probability of successful departure and arrival for a single flight 

= (89/100) X (87/100) = 7743/10000


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