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GMAT Prep -Sets

by smashinonions » Fri Sep 26, 2008 6:53 am
One on set theory
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Five years ago: GMAT - 740

Five years later: 1st Attempt - 620
GOING for 2nd attempt: Target - 740
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by stop@800 » Fri Sep 26, 2008 7:50 am
Ans is D

Draw a tabel and you will find
Any of the information will help you complete the table.
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by txeconomist » Fri Sep 26, 2008 11:45 am
Im sort of leaning towards E. I think we need another piece of informtion. Seems that we would ahve to assume that 40 like BS and 80 dislike BS... can you explain?
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by stop@800 » Fri Sep 26, 2008 12:32 pm
dislike lima = 2/3
like lima = 1/3

of ppl who dislike lima 3/5 dislike sprouts
so ppl who dislike lima nd dislike sprouts = 2/3 * 3/5 = 2 / 5
and
also
ppl who dislike lima 3/5 dislike sprouts
so ppl who like sprout will be 2/5 of ppl who dislike lima

that is
so ppl who dislike lima nd likes sprouts = 2/3 * 2/5 = 4 / 15


now we need to find 4/15 of total ppl


A sufficient

B:
40 like lima
ppl who dislike lima are 2/3 or total
so ppl who like lima = 1/3
if 1/3 is 40 => total will be 120
so B also suff

Hope this helps!!
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by txeconomist » Fri Sep 26, 2008 1:29 pm
shoot i misread it...i thought it was asking for who dislikes Sprouts and like Lima Beans...
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