Subject: mathqa
Question: a vessel of capacity 2 litre has 16 % of alcohol and another vessel of capacity 6 litre had 40 % alcohol . the total liquid of 8 litre was poured out in a vessel of capacity 10 litre and thus the rest part of the vessel was filled with the water . what is the new concentration of mixture ?
Option: 
A: 71 % .
B: 51 % .
C: 31 % .
D: 27.2 % .
Answer: D