The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 45 kg. What might be the weight of the new person?
Choose the correct choice
A) 65 kg
B) 90 kg
C) 85 kg
D) Data inadequate
E) None of these
A   65 kg   Total weight increased = (8 x 2.5) kg = 20 kg.   Weight of new person = (64 + 20) kg = 65 kg.
<result>A</result>
The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 45 kg. What might be the weight of the new person?