The average weight of nine persons is 25 kg. If a new person joins this group, then the average weight becomes 26 kg. What is the weight of the new person?
Answer & explanation
Correct answer: option 1
Sum of weight of 9 persons = 9 × 25 = 225 kg
A new person joined them ,
Now , Sum of weight of 10 person = 10 × 26 = 260 kg
Weight of new person = 260 - 225 = 35 kg