Solve.A chemist needs 11 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. 3.3 liters of the 20% solution; 7.7 liters of the 70% solution
B. 2.2 liters of the 20% solution; 8.8 liters of the 70% solution
C. 4.4 liters of the 20% solution; 6.6 liters of the 70% solution
D. 5.5 liters of the 20% solution; 5.5 liters of the 70% solution
Answer: C
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? 0
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A. 
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D. 
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+ 
? 1
A. 
B. 
C. 
D. 