1.

In a mixture of milk and water solution, the concentration of milk is 40%. In what ratio should this mixture mixed with water so that in the new mixture, the concentration of water will become 80%?

A. 2 : 1
B. 1 : 2
C. 1 : 1
D. 4 : 5
E. None of these
Answer» D. 4 : 5


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