medium · GMAT Quantitative Reasoning
A laboratory technician has 12 liters of a liquid solution that is 20 percent acid by volume. The technician adds x liters of a second solution that is 50 percent acid by volume to create a final mixture that is 30 percent acid by volume.
What is the value of x?
- 6
- 5
- 10
- 8
- 4
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