In what ratio must water be mixed with milk costing Rs.12 per litre to obtain a mixture worth of Rs.8 per litre? Choose the correct choice
A) 1 : 2
B) 2 : 1
C) 4 : 3
D) 5 : 3
E) None
Ratio of water to milk = 4 : 8 = 1 : 2   1 : 2nswer 1 : 2
<result>A</result>
In what ratio must water be mixed with milk costing Rs.12 per litre to obtain a mixture worth of Rs.8 per litre?