8 liters of solution is removed from 20% milk solution and 8 liters of water is added to the solution. The resulting solution has 16% milk in it. What was the initial quantity of the 20% milk solution?  Answers
A) 40 Ltrs
B) 50
C) 60
D) 70
E) 80
Allegation method.   Concentration of 40 Ltrslcohol in original sol - 20%   Concentration of 40 Ltrslcohol in water -- 0%   Concentration of 40 Ltrslcohol in final sol -- 16%   40 Ltrsfter applying allegation as shown in figure they have to be mixed in 4:1 part   1 part is given as 8 ltr, so total initial volume is 5 part = 5*8= 
<gadget id="calculator">5*8</gadget>
<output>40</output>
40 Ltrs   40 LtrsNSWER:40 Ltrs
<result>A</result>
8 liters of solution is removed from 20% milk solution and 8 liters of water is added to the solution. The resulting solution has 16% milk in it. What was the initial quantity of the 20% milk solution?