Question

The average weight of first 11 persons among 12 persons is 95 kg. The weight of 12th person is 33 kg more than the average weight of all the 12 persons. The weight of the 12th person is

Answer 1

Average weight of first 11 person among 12...

Average weight=total weight / total person
95kg=total weight/11
total weight=95kg×11=1045kg

the weight of 12th person is 33kg more than average weight...
suppose that ..
average weight of 12 person= x
so, weight of 12th person=(x+33)kg
x=total weight/12
x= (total weight of 11 + weight of 12th)/12
x=(1045+(x+33))kg/12
12x-x= 1078kg
x=1078/11 =98kg... average weight of 12 person

weight of 12th person=x+33=98+33=131kg