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

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Jcpenny
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If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   Updated on: 08 Nov 2023, 03:11
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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

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B

Originally posted by Jcpenny on 05 Nov 2008, 16:26.
Last edited by Bunuel on 08 Nov 2023, 03:11, edited 2 times in total.
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FN
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   05 Nov 2008, 17:03
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7/8x-3/4x=5galls

1/8*x=5gallons

x=40 gallons
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   23 Oct 2013, 06:19
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 ;
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   07 Nov 2017, 21:16
3/4x+5 = 7/8x
24x+160 = 28x
x = 40
Answer B
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   08 Nov 2017, 17:44
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Jcpenny wrote:
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


We can create the following equation in which n = the capacity of the tank:

(3/4)n + 5 = (7/8)n

Multiplying the equation by 8, we have:

6n + 40 = 7n

40 = n

Answer: B
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink] New post   18 Apr 2022, 09:06
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink]
18 Apr 2022, 09:06
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