Question

A bottle was filled with alcohol. When it was half empty, it was filled with water
Again, when the bottle got half empty, it was refilled with alcohol. Again, on being half
empty, it was refilled with water. Find the percentage of alcohol in the final mix​

Answer 1

Answer:

75

Step-by-step explanation:

first the % became 50 then with the filling of water there was 50-50% of both water and alcohol then in the next 25% of each was drunk leaving 25%of water and alcohol which is the remaining half then at last 50% more of alcohol was added.

so 100-50=50

2×(50)

2×(25)

25+50

=75