A mixture contains acid and water in the ratio of 5 : 3. If 12 litres of water is added to it. then the ratio of acid and water becomes 5 : 6. What is the quantity of acid in the mixture?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 20 litres.
Given that, ratio of acid and water in the mixture = 5 : 3
Let the amount of acid ans water in the mixture be 5x and 3x respectively.
According to the given question,
⇒ 3x + 12 = 6x
⇒ 3x = 12
⇒ x = 4
Quantity of acid = 5x
⇒ 5 × 4 = 20 litres
Hence the quantity of acid in the mixture is 20 litres.