Question

how much water should be added with 20ml of alcohol so as to obtain 25% 0f alcohol solution ​

Answer 1

Answer:

60ml

Explanation:

There is 20ml of alcohol and need to make 25% alcohol in the solution of water............(given)

Solution needs 25% of water = 25 /100

Which means 100/25×20 = 4/1× 20

= 80.

Hence, the solution needed must be of 80ml.

And water need d to add in it

= Total solution - solution of alcohol

= 80 - 20

= 60

Therefore 60ml of water must be added 20ml of alcohol to get 25% of the solution as alcohol.