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Pure milk costs Rs. 16/L. After adding w...

Pure milk costs Rs. 16/L. After adding water the milkman sells the mixture Rs. 15/L and thereby makes a profit of `25%`. In what respective ratio does he mix milk with water?

A

`3 : 1`

B

`4 : 3`

C

`3 :2`

D

`5 : 3`

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