Karishma has just learned that she needs to fly from Auckland to Wellington the next morning for an urgent work-related matter. She calls Air New Zealand and JetStar looking for a ticket. The early morning flights are all pretty full and she learns that there is a 25% chance that she can get on an Air NZ flight and 35% chance that she can get on JetStar. What is the approximate probability that Karishma will be able to get on a plane to Wellington?
A) 51%
B) 35%
C) 65%
D) 25%

Question

Quizplus · Accepted Answer

The probability that Karishma cannot get on an Air NZ flight is 75% and cannot get on a JetStar flight is 65%. The probability that she cannot get on either flight is 75% * 65% = 48.75%. Therefore, the probability that she can get on at least one flight is 100% - 48.75% = 51.25%, which approximates to 51%.

Karishma Has Just Learned That She Needs to Fly from Auckland