In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength?

In what ratio must a mixture of 20% milk strength be mixed with that o

1.	In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength?
A.	7 : 1
B.	4 : 1
C.	5 : 2
D.	9 : 2
Answer» B. 4 : 1

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In what ratio must a mixture of 20% milk strength be mixed with that of 60% milk strength so as to get a new mixture of 25% milk strength?

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