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prealgebra intermediate

Problem

In Chemistry class, Samantha finds that she can make a certain solution by mixing liters of chemical A with liters of water (this gives her liters of the solution). She wants to make a total of liters of this new solution. To do so, how many liters of water will she use?
Solution
Firstly, we find that is the fraction of water in the solution. Thus, since Samantha wants total liters of the solution, we have that she must use liters of water.
Final answer
0.16