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A litre of water at 50^@C is mixed with ...

A litre of water at `50^@C` is mixed with another litre of water at `70^@C.` What will be the temperature of the mixture?

A

`20^@C`

B

`120^@C`

C

Between `50^@C and 70^@C`

D

More than `70^@C` but less than `120^@C`

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