BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Volume

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Data Sufficiency |
Master | Next Rank: 500 Posts
Posts: 496
Joined: Sun May 04, 2008 11:01 pm
Location: mumbai
Thanked: 7 times
GMAT Score:640

by stubbornp » Mon Sep 29, 2008 12:52 am
given

x-200=3/7y...we have to calculate y

stmt 1:x=1/2y....sufficient

stmt2:
y-1600=3/7y..sufficient
Top
Master | Next Rank: 500 Posts
Posts: 443
Joined: Sat Jun 28, 2008 6:33 pm
Thanked: 5 times

by Vignesh.4384 » Mon Sep 29, 2008 12:57 am
stubbornp wrote:given

x-200=3/7y...we have to calculate y

stmt 1:x=1/2y....sufficient

stmt2:
y-1600=3/7y..sufficient

Statement 2 how ever does not say how full the tank was when 200 liters was removed.
i.e the problem never says if the 200 liters were acutally removed when the tank was quater full or half full ..
Top
Junior | Next Rank: 30 Posts
Posts: 16
Joined: Sun Sep 21, 2008 9:12 am
Thanked: 1 times

by afterhours » Mon Sep 29, 2008 3:16 pm
In this case we don't need to know how much the tank was filled before the 200 gallons were removed because due to statement 2 we know:
the amount left in the tank (3/7's of a tank)
and the coincidental 4/7's that is not there (1600 gallons)

From those numbers we can get the amount of oil left.

IMO D as well.
Top
Master | Next Rank: 500 Posts
Posts: 133
Joined: Sat Dec 29, 2007 2:43 am
Thanked: 12 times

by raju232007 » Tue Sep 30, 2008 6:35 am
assume C to be the tank capacity & V to be the volume of oil in it...

From the question we can infer that V-200=3/7C

From statement 1: V=1/2C

1/C-200=3/7C .....hence capacity can be determined

From statement 2: V-200=C-1600

C-1600=3/7C....hence capacity can be determined

So the ans is D..
Top
Post new topic Post Reply
• Page 1 of 1