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Mathematics 15 Online
OpenStudy (anonymous):

Melissa is interviewing for a job in the suburb of another city and decides that the best way to get there is to fly to the city and take a train to the suburb.  If the plane is on time 90% of the time and the train is on time 70% of the time, what is the probability that both will be on time? a. 60% c. 70% b. 63% d. 90%

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