In 1979 approximately of the 37.3 million airline passengers traveling to or from the United States used Kennedy Airport. If the number of such passengers that used Miami Airport was the number that used Kennedy Airport and 4 times the number that used Logan Airport, approximately how many millions of these passengers used Logan Airport that year?
I made the same mistake before when I posted this question.
There are some data missing right?
I think that question needs to be, follow the link below:
http://www.gmatclub.com/phpbb/viewtopic ... ight=logan
Kennedy = 37.3/3
Miami = (K/2) = 37.3/6, but Miami also is equal to 4*Logan
Logan = (37.3/6)/4 = 37.3/24. about 1.6 A