mehaksal wrote:On any given Saturday, flights arrive at XYZ airport every hour, for 24 hours. The average number of flights arriving at XYZ airport on any Saturday is a multiple of 12. Is the total number of flights that arrived on a Saturday greater than 180?
1. On the same Saturday, the median number of flight arrivals every hour is 17
2. On the same Saturday, the highest number of flight arrivals in an hour was 30
Statement 1: On the same Saturday, the median number of flight arrivals every hour is 17.
Thus, for 12 of the 24 hours, the number of arrivals per hour was AT or ABOVE the median of 17.
Thus, the MINIMUM total for these 12 hours = 12*17 = 204, with the result that the total for the whole day must have been greater than 180.
SUFFICIENT.
Statement 2: On the same Saturday, the highest number of flight arrivals in an hour was 30.
It's possible that over the other 23 hours there were 30 arrivals, with the result that the total for the whole day = 30+30 = 60.
It's possible that over the other 23 hours there were 1170 arrivals, with the result that the total for the whole day = 1170+30 = 1200.
INSUFFICIENT.
The correct answer is
A.
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