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crackgmat007: Legendary Member; Posts: 882; Joined: Fri Feb 20, 2009 2:57 pmFollowed by: 1 member; Thanked: 15 times; GMAT Score:690

by crackgmat007 » Sat Oct 10, 2009 1:42 pm

OA - D

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Last edited by crackgmat007 on Sat Oct 10, 2009 2:57 pm, edited 1 time in total.

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Source: Beat The GMAT — Problem Solving | Sat Oct 10, 2009 1:42 pm

kishore: Senior | Next Rank: 100 Posts; Posts: 62; Joined: Fri Dec 21, 2007 2:58 pm; Location: Fremont , California; Thanked: 3 times

Answer is option 4 (i.e) 400

by kishore » Sat Oct 10, 2009 1:52 pm

x+43+17+12+3 = 100
x+75 = 100
x = 25

75% of them are delayed which is equalt to 1200

75/100 * x = 1200

x = 1600

25% are on time

25/100 * 1600 = 400

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