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

A solution of 8% boric acid is to be diluted by adding a 2% boric acid solution to it. The resulting mixture is to be more than 4% but less than 6% boric acid. If there are 640 litres of the 8% solution, how many litres of 2% solution will have to be added?

A solution of 8% boric acid is to be diluted by adding a 2% boric acid solution to it.The resulting mixture is to be more than 4% but less than 6% boric acid.If there are 640 litres of the 8% solution,how many litres of 2% solution will have to be added?

A solution of 9% acid is to be diluted by adding 3% acid solution to it. The resulting mixture is to be more then 5% but less than 7% acid. If there is 460 L of the 9% solution, how many litres of 3% solution will have to be added?

Solution of 9% acid is to be diluted by adding 3% acid solution to it. The resulting mixture is to be more than 5% but less than 7% acid, If there is 460 L of the 9% solution, how many litres of 3% solution will have to be added

8% of NaCl solution is

2250 litres of an acid solution contain 35% acid. Find the range of water in litres to be added with this acid solution so that the resulting mixture will have more than 15% but less than 25% acid.

How many litres of a 35% acid solution must be added to 500 litres of a 16% acid solution so that acid content in the resulting mixture may be more than 25% but less than 30% ?

Boric acid a dilute solution is used as :