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:

A. 20 litres

B. 40 litres

C. 60 litres

D. 80 litres

View Answer

Correct Answer :
60 litres

Explanation :

Quantity of milk = 60 x (2/3) litres = 40 litres

Quantity of water in it = (60-40) litres = 20 litres

New ratio = 1 : 2

Let quantity of water to be added further be z litres

Then, milk : water = 40/(20+z)

Now, 40/(20+z) = 1/2

=> 20+z = 80

=> z = 60

=> Quantity of water to be added = 60 litres

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