A vessel contains 60 liters of acid and water solution containing 80% acid. How much water in it to be mixed with 60% acid solution?

A chemist has one solution containing 50% acid and a second one containing 25% acid. How much of each should be used to make 10 litres of a 40% acid solution?

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 chemist has one solution which is 50% acid and another solution which is 25 % acid. How much each should be mixed to make 10 litres of a 40 % acid solution ? (Use Cramer's rule to solve the problem).

100gm of an aq. solution of sugar contains 40% sugar by mass. How much water should be evaporated get 60% sugar solution by mass?

100gm of an aq. solution of sugar contains 50% sugar by mass. How much water should be evaporated get 60% sugar solution by mass?

100gm of an aq. solution of sugar contains 30% sugar by mass. How much water should be evaporated get 60% sugar solution by mass?

100gm of an aq. solution of sugar contains 50% sugar by mass. How much water should be evaporated get 80% sugar solution by mass?