The avarage weight of 20 members of an office is 90 kg.if a member is removed from office .the new avarage weight is decress by 2 kg.the weight of removed member is
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Average weight=total weight / total member
90kg=total weight/20
total weight= 90kg×20= 1800kg
when a member removed....
(90-2)kg=total weight/(20-1)
total weight= 88kg×19=1672kg
weight of removed member...
1800kg-1672kg=128kg
Answer.. 128kg
90kg=total weight/20
total weight= 90kg×20= 1800kg
when a member removed....
(90-2)kg=total weight/(20-1)
total weight= 88kg×19=1672kg
weight of removed member...
1800kg-1672kg=128kg
Answer.. 128kg
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