Solve the problem.A chemist needs 6 liters of a 50% salt solution. All she has available is a 20% salt solution and a 70% salt solution. How much of each of the two solutions should she mix to obtain her desired solution?
A. 3 L of the 20% solution; 3 L of the 70% solution
B. 1.2 L of the 20% solution; 4.8 L of the 70% solution
C. 1.8 L of the 20% solution; 4.2 L of the 70% solution
D. 2.4 L of the 20% solution; 3.6 L of the 70% solution
Answer: D
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?
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