SOLUTION: Susie is making a mixture of acetic acid and water. which forms vinegar. If she has a mixture of 100 ml of 2% acetic acid. how many ml of pure acetic acid should she add to produce

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Susie is making a mixture of acetic acid and water. which forms vinegar. If she has a mixture of 100 ml of 2% acetic acid. how many ml of pure acetic acid should she add to produce      Log On

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Question 1011037: Susie is making a mixture of acetic acid and water. which forms vinegar. If she has a mixture of 100 ml of 2% acetic acid. how many ml of pure acetic acid should she add to produce the required 8% acetic acid vinegar
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = ml of pure acetic acid to be added
+.02%2A100+=+2+ ml of pure acetic acid in 2% solution
----------------------
+%28+x+%2B+2+%29+%2F+%28+x+%2B+100+%29+=+.08+
+x+%2B+2+=+.08%2A%28+x+%2B+100+%29+
+x+%2B+2+=+.08x+%2B+8+
+.92x+=+6+
+x+=+6.522+
6.522 ml of pure acetic acid should be added
check:
+%28+6.522+%2B+2+%29+%2F+%28+6.522+%2B+100+%29+=+.08+
+8.522+%2F+106.522+=+.08+
+8.522+=+8.522+
OK