Question

To 15 liters of water containing 20% alcohol, we add 5 liters of pure water. What is % alcohol?

Answer 1

Answer:

19%

Explanation:

Because 1%=5 so we added 5l petrol so it is 19%

Answer 2

Answer:

15%Alcohol

Explanation:

15 litres of water contains 20 percent alcohol which means 3 litres alcohol,

If 5 litres pure water is added, the quantity is 20 litres but the quantity of alcohol does not change from 3 litres,

Hence when 3/20×100 is solved u get 15%