A mixture contains milk and water in a ratio of 9 : 5. When 6 litres of water is added to this mixture, the ratio of milk and water becomes 9 : 7. Find the quantity of milk in the mixture.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 27 litres.
Calculations:
Let the initial quantity of milk and water be 9x and 5x.
According to the question;
⇒ 9x/(5x + 6) = 9/7
⇒ 63x = 45x + 54
⇒ 18x = 54
⇒ x = 3
Hence, the quantity of milk = 9x = 9 × 3 = 27 litres