Question : The alcohol and water in a mixture are in the ratio of 4 : 5 respectively. 20-litres water is added to it. If the ratio of alcohol and water in the new mixture is 1 : 3 respectively, then what is the total quantity of the alcohol in the new mixture?
Option 1:
Option 2:
Option 3:
Option 4:
Correct Answer:
Solution :
Let the initial quantities of alcohol and water in the mixture as 4
The total quantity of the mixture
= 4
After adding 20 litres of water, the new quantity of water
= 5
Now,
⇒ Ratio =
⇒
⇒ 3 × 4
⇒ 7
⇒
So, total Alcohol in the new mixture = Alcohol in the initial mixture = 4
= 4 ×
Hence, the correct answer is