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

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If Henry were to add 5 gallons of water to a tank that is [#permalink] New post 05 Nov 2008, 15:26
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A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

94% (01:29) correct 6% (01:33) wrong based on 78 sessions
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, 05:25, edited 1 time in total.
Moved to PS forum and added the OA.
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Re: water(30) [#permalink] New post 05 Nov 2008, 16:03
7/8x-3/4x=5galls

1/8*x=5gallons

x=40 gallons
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Re: water(30) [#permalink] New post 23 Oct 2013, 05:19
FN wrote:
7/8x-3/4x=5galls

1/8*x=5gallons

x=40 gallons


Hi guys ,

alternative methos is :
plugging through answers :)

Assume with 40 as answer , 7/8 = 35/40 , further reduce it by 5 then 30/40 =3/4 ;
Re: water(30)   [#permalink] 23 Oct 2013, 05:19
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If Henry were to add 5 gallons of water to a tank that is

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