A bucket of 20 litres is 35% full. How many litres of water must be put into it so it is 65% full

A solution of 30 litres of milk and water, has 70% milk. How many litres of water must be added so that the volumes of milk and water will be in the ratio 3 : 2 ?

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 manufacturer has 600 litres of a 12% solution of acid. How many litres 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 manufacturer has 600 litres of a 12% solution of acid. How many litres 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 manufacturer has 600 litres of a 12% solution of acid. How many litres 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%?