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The freezing point of a diluted milk sam...

The freezing point of a diluted milk sample is found to be`-0.2^(@)C`, while it should have been `-0.5^(@)C` for pure milk. How much water has been added to pure milk to make the diluted sample?

A

1 cup of water to 2 cups of pure milk

B

3 cups of water to 2 of pure milk

C

1 cup of water to 3 cups of pure milk

D

2 cups of water to 3 cups of pure milk

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