Free GMAT Practice Question

Question 1 of 1
ID: GMAT-VR-CR-003
Section: Verbal Reasoning - Critical Reasoning (CR)
Topic: Inference
Difficulty level: Medium

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Last spring Halvard Airport opened a second check-in hall, doubling the number of check-in desks available to departing passengers. The airport handles about the same number of departing passengers each day as it did before, and a desk still takes about as long to check in one passenger as it did before. Yet the average (arithmetic mean) time a passenger spends waiting in the check-in queue has risen from nine minutes to fourteen.

Which of the following, if true, most helps to explain the increase in average waiting time?

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