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A milkman makes 20% profit by selling mi...

A milkman makes 20% profit by selling milk mixed with water at Rs 9 per litre. If the cost price of 1 litre pure milk Is Rs 10, then the ratio of milk and water in the mixture is

A

`3:1`

B

`4:1`

C

`3:2`

D

`4:3`

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The correct Answer is:
A
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