12, A solution of 8% boric acid is to be diluted by adding a 2% borici – InterviewSolution

1.	12, A solution of 8% boric acid is to be diluted by adding a 2% boricit. The resulting mixture is to be more than 4% but less than 6% boric acid.640 litres ofthe 8% solution, how many litres of the 2% solution will have
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