1.

A manufacturer has 600 liters of a 12% solution of acid. How many liters of a 30% acid solution must be added to it so that acid content in the resulting mixture will be more than 15% but less than 18%?

A. More than 120 liters but less than 300 liters
B. More than 140 liters but less than 600 liters
C. More than 100 liters but less than 280 liters
D. More than 160 liters but less than 500 liters
Answer» B. More than 140 liters but less than 600 liters


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