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.
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GMAT Prep Test 1 DS 4
Source: Beat The GMAT — Data Sufficiency |
E IMO
A,B only give proportions not exact values insuff
combine we get same info as in stmt A Insuff
E
A,B only give proportions not exact values insuff
combine we get same info as in stmt A Insuff
E
Regards
Samir
Samir
