The ratio of milk to water in three containers of equal capacity is 3 : 2, 7 : 3 and 11 : 4 respectively. The three containers are mixed together. What is the ratio of milk to water after mixing?

To find the final ratio, calculate the total milk and total water from all three containers. Container 1 has milk:water = 3:2, so milk fraction = 3/5. Container 2 has milk:water = 7:3, so milk fraction = 7/10. Container 3 has milk:water = 11:4, so milk fraction = 11/15. Total milk = 3/5 + 7/10 + 11/15 = 18/30 + 21/30 + 22/30 = 61/30. Total water = 2/5 + 3/10 + 4/15 = 12/30 + 9/30 + 8/30 = 29/30. The ratio of milk to water is 61:29.