Question

The average weight of 8 person kncreases by 1.5 kg, if a person weighing 65kg replaced by a new person,what would be the weight of the new person

Answer 1

Answer:

average of 8 persons =x

new avg is x+1.5

so

8x-65+new person=8(x+1.5)

new person=65+9=74kg