The average weight of $6$ persons is increased by $5\, kg$ when one of them who weighs $40\, kg$ is replaced by a new man. The weight of new man is (in $kg$)
The average weight of $6$ persons is increased by $5\, kg$ when one of them who weighs $40\, kg$ is replaced by a new man. The weight of new man is (in $kg$)
- A
$76$
- B
$74$
- C
$72$
- D
$70$
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