Let the weight of 12 th person =xkg Let the average weight of 12 persons =ykg According to the question, ‌
11×95+x
12
=y ⇒‌‌1045+x=12y.....(i) Again, according to the question, x=y+33 1045+y+33=12y [from Eq. (i)] ⇒‌‌11y=1078⇒y=98 ∴ Weight of 12 th person =y+33 =98+33=131kg