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April 21, 2014

April 21, 2014

Posted by **Elizabeth White** on Monday, November 5, 2007 at 5:19pm.

- Math -
**DrBob222**, Monday, November 5, 2007 at 5:36pm12 oz @ 0.4 = 4.8 oz vinegar.

12 oz @ 0.6 = 7.2 oz oil.

You want 25% of some volume to be 4.8 oz vinegar.

0.25 X = 4.8

X = 19.2 total volume.

You had 12 oz; therefore, you must add 19.2 - 12.0 oz oil or you must add 7.2 oz oil to make a final volume of 19.2 oz.

You can check it to see if it is right.

4.8 oz vinegar + 7.2 oz oil (initially) + 7.2 oz oil added to make 19.2 oz total.

vinegar is 4.8/19.2 = 0.25

oil is 14.4/19.2 = 0.75

Check my thinking. Check my work.

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