Solve.A chemist needs 5 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. 2 liters of the 20% solution; 3 liters of the 70% solution
B. 2.5 liters of the 20% solution; 2.5 liters of the 70% solution
C. 1 liters of the 20% solution; 4 liters of the 70% solution
D. 1.5 liters of the 20% solution; 3.5 liters of the 70% solution


Answer: A

Mathematics

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