9. In what ratio must water be mixed with milk to gain 16 2/3% on selling the mixture at cost price?
A. 4 : 3
B. 2 : 3
C. 1 : 6
D. 6 : 1
9. In what ratio must water be mixed with milk to gain 16 2/3% on selling the mixture at cost price?
A. 4 : 3
B. 2 : 3
C. 1 : 6
D. 6 : 1