In a mixture of 60 litres, the ratio of milk and water is 2 : 1. If this ratio is to be 1 : 2, then the quantity of water to be further added is _____.
(A) 20 litres
(B) 30 litres
(C) 40 litres
(D) 60 litres
how can 60 liters of water be there in a mixture of water and milk , there must be some space for water.water=40 lmilk=20 l
Ans 2:
Class : Class 9
D is the correct answer.
At first milk is 40 L and water is 20 L
To set new proportion of 1:2, we have to add 60 L of water in milk.
Ans 3:
Class : Class 7
If ‘x’ is the common multiple, then the quantity of milk = 2x and quantity of water = xSo, 2x x = 60 litres3x = 60Or x = 60⁄3 = 20So, quantity of milk = 2x = 40 litres and quantity of water = x = 20 litresLet ‘y’ be the quantity of water to be added. So, quantity of water = (20 y)Then, 40 : (20 y) = 1 : 22 x 40 = 1(20 y)80 = 20 y20 y = 80So, y = 80 - 20 = 60Answer-(D) 60 litres