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DS quesiton . please help

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DS quesiton . please help

by silvia928 » Sun May 25, 2008 11:07 pm
2.)On a certain transatlantic crossing, 20% of a ship's passengers held round-trip tickets and also took their cars aborad the ship. If 60% of the passdengers with round-trip tickets did not take their cars abroad the ship, what % of the ship's passengers held round-trip tickets?

A.33 1/3%
B.40%
C.50%
D.60%
E.66 2-3%

The answer is: C
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Source: — Data Sufficiency |
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by getneonow » Mon May 26, 2008 4:47 am
dude. you are posting the same problems in DS and PS !! please refrain such activity.

Anyways answering your qn

Let R, C be two sets where R is # of ppl having return tickets and C is # of ppl having their car aboard.

Let T be total number of passengers

Then given # of ppl who have ONLY return ticks = 0.6 R

=> # of ppl who have ticks and cars aboard = 0.4 R

but given is that # of ppl having ticks and cars aboard = 20% T = 0.2 T

=> 0.4 R = 0.2 T

=> R/ T = 1/2

=> 50% is the answer..

Neo
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by silvia928 » Mon May 26, 2008 12:41 pm
Sorry. I am pretty new to this forum and i somehow just copy and paste the on the subject...so i made a mistake on the subject.
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by akshatsingh » Mon May 26, 2008 9:09 pm
Answer should be 50%

whats the OA ?
Aks
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by silvia928 » Mon May 26, 2008 9:29 pm
Hi Aks,

the answer is 50%. you are correct.
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