A solution of 165 litres contains `80%` of acid and the rest water. How much water must be added to the above solution such that the resulting mixture contains `25%` water ?

A solution of 150 litres contains 60% of milk and the rest is water. How much water must be added to the above about solution such that the resulting mixture contains 50% of water (in litres) ?

175 litres of a solution contains 88% of acid and the rest water. How many liters of water must be added such that the resulting mixture contains 23% of water ?

A mixture of 20 L of milk and water contains 20% water. How much water should be added to this mixture so that the new mixture contains 25% water

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.

A mixture of 30 litres of spirit and water contains 20% of water in it. How much water must be added to it, to make the water 25% in the new mixture ?

A mixture of 45 litres of spirit and water, contains 20% water in it. How much water must be added to it to make water 25% in the new mixture ?