question_answer

One litre of water at \[30{}^\circ C\] is mixed with one litre of water a\[50{}^\circ C\]. The temperature of the mixture will be

A)  \[80{}^\circ C\]

B)  more than \[50{}^\circ C\] but less than \[80{}^\circ C\]

C)   \[20{}^\circ C\]

D)   between\[30{}^\circ C\] and \[50{}^\circ C\]