Subject: mathqa
Question: two vessels contains equal number of mixtures milk and water in the ratio 3 : 2 and 4 : 1 . both the mixtures are now mixed thoroughly . find the ratio of milk to water in the new mixture so obtained ?
Option: 
A: 5 : 11
B: 15 : 4
C: 1 : 3
D: 7 : 3
Answer: D