Two bottles contain acid and water in the ratio 2 : 3 and 1 : 2 respectively. These are mixed in the ratio 1 : 3. What is the ratio of acid and water in the new mixture?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 7 : 13
Ratio of acid and water in new mixture
= (2/5 × 1 + 1/3 × 3)/(3/5 × 1 + 2/3 × 3)
= (7/5)/(13/5)
= 7/13