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January 28, 2015

January 28, 2015

Posted by **geena** on Thursday, November 10, 2011 at 12:48am.

- algebra -
**Steve**, Thursday, November 10, 2011 at 5:10amyou need to specify some other concentration. You say "liters of each" but only name the 25% solution.

for example, if he has 31% solution, then adding 7.5L of 25% to 7.5L of 31% will give 15L of 28%.

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