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# OS: Flights are late

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Director
Joined: 20 Jul 2004
Posts: 593
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OS: Flights are late [#permalink]  29 Sep 2004, 21:25
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Flight_K3_M34.JPG [ 18.45 KiB | Viewed 536 times ]

Senior Manager
Joined: 21 Jun 2004
Posts: 340
Followers: 1

Kudos [?]: 2 [0], given: 0

%ge of Flights delayed: 43+17+12+3=75
Therefore,75% were delayed.

From the question,
.75(Total Number of flights)=1200
Total Number of flights=1600

Flights on time(X)
= 100-(%Delayed flights)
=100-75=25%

Therefore, flights that departed on time are
.25*1600=400
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GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5078
Location: Singapore
Followers: 22

Kudos [?]: 184 [0], given: 0

75% of the flights were late --> 1200 flights
x = 25% and so number of flights on schedule is (25/75)*1200 = 400
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