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GMAT Prep Test 1 DS 4

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Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
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by jangojess » Wed Oct 24, 2007 1:37 pm
let time taken for be Tx and tht for Y be Ty..

stmt 1 - 1/Tx + 1/Ty = 2Tx/3...this when solving gives a relation b/w Tx and Ty...So suff.

stmt 2 - straight forward...you'll get the same relation b/w Tx and Ty as derived in 1st stmt....So Suff..........Ans is D.
Trying hard!!!
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by me4mba » Wed Oct 24, 2007 2:14 pm
How can you get the difference in hours though?
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by samirpandeyit62 » Thu Oct 25, 2007 12:27 am
E IMO

A,B only give proportions not exact values insuff

combine we get same info as in stmt A Insuff

E
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Samir
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by raulverde » Thu Oct 25, 2007 12:27 pm
Another vote for E. We don't have any specific times.
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