[" 35.How mach pure alcolaol must be added to "$00" mb af a "15%" solution to make its "],[" strength "32%?]

How much pure alcohol be added to 400 ml of a 15% solution to make its strength 32%?

How much pure alcohol be added to 400 ml of a 15% solution to make its strength 32%?

How much pure alcohol be added to 400mlofa15% solution to make its strength 32%?

How much pure alcohol has to be added to 400 mL of a solution containing 15% of alcohol to change the concentration of alcohol in the mixture to 32%?

20 mL of a solution of sulphuric acid neutrlise 21.2 mL of 30 % solution of sodium carbonate. How much water should be added to 100 mL of this solution to bring down its strength to decinormal ?

How many kg of pure salt must be added to 30kg of 2% of salt and water to increase it to a 10% solution?

If n n/3 kg of pure salt must be added to 30 kg of 2% solution of salt and water to increase it to a 10% solution, then find n.