45 litres of mixture is created by mixing Liquid A and Liquid B in the ratio 3:2. How much more Liquid B must be added to make the ratio 9:11?  Choose the correct choice:
A) 9 Litres
B) 10 Litres
C) 12 Litres
D) 15 Litres
E) 16 Litres
In current ratio A = (3/5) * 45= 
<gadget id="calculator">(3/5) * 45</gadget>
<output>27</output>
27   B is 18   Suppose "b" amount of b is added   new ratio= 27/(b+18) = 9/11   =&gt; b+18 = 33   =&gt; b = 15   So, answer will be 15 Litres
<result>D</result>
45 litres of mixture is created by mixing Liquid A and Liquid B in the ratio 3:2. How much more Liquid B must be added to make the ratio 9:11?