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X grams of water were added to the grams of a strong

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VP
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Joined: 21 Jul 2006
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X grams of water were added to the grams of a strong  [#permalink]

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New post 11 Nov 2008, 02:53
00:00
A
B
C
D
E

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X grams of water were added to the grams of a strong solution of acid. As a result, the concentration of acid in the solution dropped by Y percent. What was the concentration of acid in the original solution?

(1) X = 80

(2) Y = 50






Would please show me the formula? thanks

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VP
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Re: DS: Mixture  [#permalink]

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New post 11 Nov 2008, 03:48
It should be E as the original weight of solution is not know.
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Re: DS: Mixture  [#permalink]

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New post 11 Nov 2008, 06:05
I get E as well.
We can find the Original weight of the acid usng 1 and 2 but not the concentration.

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Re: DS: Mixture &nbs [#permalink] 11 Nov 2008, 06:05
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