Asolution of 8% boric acid is to be diluted by adding a 2%bonic acid s – InterviewSolution

1.	Asolution of 8% boric acid is to be diluted by adding a 2%bonic acid solution to it. The resulting minture is to be morethan 4% but less than 6% boric acid. If we have 640 lites ofthe 8% solution, how many litres of the 2% solution will haveto be added?
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