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jamesk486
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Topic: prep question
PostMon Apr 23, 2007 1:49 am
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Among a bunch of sweaters, 3/5 are pullovers and 1/4 are white. What portion of all the sweaters is not white pullovers?

(1) There are 60 sweaters in total
(2) 1/3 of the pullovers is white

Just by eyeballing I know its D, but just wondering how to solve it..
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Prasanna
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PostMon Apr 23, 2007 5:47 am
Is the answer D? I am getting is as B.

(2) tells us that 1/3 of the pullovers are white. Since 3/5 of the total are pullovers we can find the fraction of white pullovers and hence the non-white pullovers.

(1) tells us that there 36 pullovers and 15 whites. This does not help us calculate any additional detail.

Am I missing anything here?
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gabriel
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PostMon Apr 23, 2007 6:06 am
jamesk486 wrote:
Among a bunch of sweaters, 3/5 are pullovers and 1/4 are white. What portion of all the sweaters is not white pullovers?

(1) There are 60 sweaters in total
(2) 1/3 of the pullovers is white

Just by eyeballing I know its D, but just wondering how to solve it..
hmm ... i agree with prassana .. the answer is B and not D ... just a word of caution "eyeballing" culd prove fatal in DS ... there needs to be a concrete strategy to solve DS ...
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jamesk486
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PostMon Apr 23, 2007 11:49 pm
oh oops sorry..the answer is B Smile
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