In a mixture 60 liters, the ratio of milk and water 2 : 1. If the this ratio is to be 1 : 2, then the quantity of water to be further added is:  Choose the correct choice from the following answers:
A) 20 liters  B) 30 liters  C) 40 liters  D) 60 liters  E) 80 liters
Explanation :   Quantity of milk =60 x 2/3	litres = 40 liters.Quantity of water in it = (60- 40)= 
<gadget id="calculator">(60- 40)</gadget>
<output>20</output>
20 liters.New ratio= 1 : 2Let quantity of water to be added further be x liters.Then, milk : water =	40/(20 + x)Now,	40/(20+x) =1/220 + x = 80x = 60.Quantity of water to be added = 60 liters.   Answer : 60 liters
<result>D</result>
In a mixture 60 liters, the ratio of milk and water 2 : 1. If the this ratio is to be 1 : 2, then the quantity of water to be further added is: