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OpenStudy (anonymous):
How many liters of a 7% acid solution should be added to 30 liters of a 15% solution in order to obtain a 10% solution?
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OpenStudy (anonymous):
Hello there
OpenStudy (anonymous):
Any ideas?
OpenStudy (kropot72):
Let x be the number of liters to be added. (30 * 0.15) + 0.07x = 0.1(30 + x) Just solve this equation to find x.
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