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xcise_science: Master | Next Rank: 500 Posts; Posts: 106; Joined: Tue Oct 09, 2007 12:25 pm; Thanked: 1 times

by xcise_science » Sun Dec 02, 2007 12:59 pm

Can someone explain this please?

Thanks

answer is D

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Source: Beat The GMAT — Problem Solving | Sun Dec 02, 2007 12:59 pm

sujaysolanki: Master | Next Rank: 500 Posts; Posts: 214; Joined: Wed Nov 14, 2007 6:30 am; Thanked: 15 times

by sujaysolanki » Mon Dec 03, 2007 1:58 am

Nice one ...i used backsolving ..

Say x = 100 ..now pick C 1.2x = 120

20 % of 120 = 24 wont attend ..

So 120 -24 should give x ..

Only D fits in ..

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xcise_science: Master | Next Rank: 500 Posts; Posts: 106; Joined: Tue Oct 09, 2007 12:25 pm; Thanked: 1 times

by xcise_science » Mon Dec 03, 2007 7:41 am

thanks, you're right. I'll make sure to double check any answer that seem to easy.

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