Average weight of 45 students is 71.2kg. when weight of 3 new friends is added average weight becomes 71kg. find average weight of new friend.
Answers
Answered by
0
Answer:
⇒ Total number of person =8
⇒ Increased in average weight =2.5,kg
⇒ Total weight increased =8×2.5kg=20kg
⇒ Weight of replaced person =65kg
⇒ Weight of new person =(65+20)kg=85kg
Similar questions