Question

15 litres of mixture contains 20% alcohol and the rest water.If 3 litres of water be mixed to the mixture then the percentage of alcohol in the new mixture would be?Select one:a. 15%b. 17%c. 16 2/3%d. 18 %

Answer 1

Answer:

16 2/3%

Explanation:

Total mixture contains 15 litres out of which 20% is alcohol.

That is, 20/100 * 15 litres i.e. 5 litres of the mixture is alcohol.

So, 10 litres is water. Now, if 3 litres of water was to be added, new volume of mixture will become 18 litres

And water's volume in mixture will become 13 litres. But, amount of alcohol will remain at 5 litres. So percentage of alcohol will be 5/18 * 100 which is equal to 16 2/3%.

Hope it helped you!