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# If Henry were to add 5 gallons of water to a tank that is

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Manager
Joined: 10 Oct 2008
Posts: 56

Kudos [?]: 67 [0], given: 0

If Henry were to add 5 gallons of water to a tank that is [#permalink]

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05 Nov 2008, 16:26
00:00

Difficulty:

5% (low)

Question Stats:

91% (00:29) correct 9% (01:00) wrong based on 133 sessions

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If Henry were to add 5 gallons of water to a tank that is already 3/4 full of water, the tank would be 7/8 full. How many gallons of water would the tank hold if it were full?

A. 25
B. 40
C. 64
D. 80
E. 96
[Reveal] Spoiler: OA

Last edited by Bunuel on 23 Oct 2013, 06:25, edited 1 time in total.
Moved to PS forum and added the OA.

Kudos [?]: 67 [0], given: 0

Current Student
Joined: 28 Dec 2004
Posts: 3350

Kudos [?]: 319 [0], given: 2

Location: New York City
Schools: Wharton'11 HBS'12

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05 Nov 2008, 17:03
7/8x-3/4x=5galls

1/8*x=5gallons

x=40 gallons

Kudos [?]: 319 [0], given: 2

Manager
Status: suffer now and live forever as a champion!!!
Joined: 01 Sep 2013
Posts: 147

Kudos [?]: 71 [0], given: 75

Location: India
GPA: 3.5
WE: Information Technology (Computer Software)

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23 Oct 2013, 06:19
FN wrote:
7/8x-3/4x=5galls

1/8*x=5gallons

x=40 gallons

Hi guys ,

alternative methos is :

Assume with 40 as answer , 7/8 = 35/40 , further reduce it by 5 then 30/40 =3/4 ;

Kudos [?]: 71 [0], given: 75

Re: water(30)   [#permalink] 23 Oct 2013, 06:19
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