In a 40 litre mixture of alcohol & water, the ratio of alcohol and water is 5 : 3. If 20% of this mixture is taken out and the same amount of water is added then what will be the ratio of alcohol and water in final mixture?

• A. 2:1
• B. 1:1
• C. 3:1
• D. 1:2

Answer: (B)

Quantity of alohol in the mixture = 40 x 5/8 = 25 lit Quantity of water = 40 - 25 = 15 lit According to question, Required ratio =  20   -   40   x   20 100   x   5 8 15   -   40   x   20 100   x   3 8   +   40   x   20 100   =   20 15   -   3   +   8   =   1   :   1