Air in a room is separated in two region...

Air in a room is separated in two regions in volume ratio of 4: 1 by an imaginary boundary. Which statement is correct

`M_"avg"` of air in bigger region is half of `M_"avg"` of air in smaller region

`M_"avg"` of air in bigger region is twice of `M_"avg"` of air in smaller region

Both regions ill have same `M_"avg"` of air.

`M_"avg"` of air in bigger region is thrice of `M_"avg"` of air in smaller region

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