A container contains two liquids A and B in the ratio 8 : 5 .When 13 liters of mixture is drawn off and is completely replaced with liquid B, then the ratio of A and B in the container becomes 1 : 1. How many liter of liquid A was in the container initially ?

Correct option is A

Let quantity of liquid A & liquid B in the container initially be 8x & 5x liters respectively.
ATQ,

x=16/3 liters
So, required quantity = 16/3×8 = 128/3 liters