Multiple choice

In mixture I ratio of milk and water is 4:3 whereas in mixture II ratio of milk and water is 5:9. If equal quantities of these two are mixed to form new mixture III. Find the ratio of milk and water in mixture III.

  1. $11:14$
  2. $13:15$
  3. $7:6$
  4. $9:5$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Mixture I: milk=4/7, water=3/7. Mixture II: milk=5/14, water=9/14. Equal quantities mixed: Average milk = (4/7 + 5/14)/2 = (8/14 + 5/14)/2 = 13/28. Average water = (3/7 + 9/14)/2 = (6/14 + 9/14)/2 = 15/28. Ratio milk:water = 13:15.