SOLUTION: if we had a 100 ml bottle of substance which contained 35% acid, how do you reduce the acid to only 10%

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Question 682778: if we had a 100 ml bottle of substance which contained 35% acid, how do you reduce the acid to only 10%
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
You have to add water
The amount of acid in liters is:
+.35%2A100+=+35+ liters
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Let +w+ = liters of water to be added
+35+%2F+%28+100+%2B+w+%29+=+.1+
+35+=+.1%2A%28+100+%2B+w+%29+
+35+=+10+%2B+.1w+
+.1w+=+25+
+w+=+25%2F.1+
+w+=+250+
You must add 250 liters of water