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

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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink]
3/4x+5 = 7/8x
24x+160 = 28x
x = 40
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Re: If Henry were to add 5 gallons of water to a tank that is [#permalink]
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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

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