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Mathematics 20 Online
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?

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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