In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quanity of water to be further added is:
Choose the correct answer.
A) 20	B) 30	C) 40	D) 50	E) 60
Quantity of milk = (60 x 2/3) litres = 40 litres.   Quantity of water in it = (60- 40)= 
<gadget id="calculator">(60- 40)</gadget>
<output>20</output>
20 litres.   New ratio= 1 : 2   Let quantity of water to be added further be x litres.   Then, milk : water = (40/(20 + x))   Now, (40/(20 + x))= 1/2   = 20 + x = 80   = x = 60.   Therefore, Quantity of water to be added = 60 litres.   Answer is 60.
<result>E</result>
In a mixture 60 litres, the ratio of milk and water 2 : 1. If this ratio is to be 1 : 2, then the quanity of water to be further added is: