The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?  Select the correct option
A) 76 kg
B) 76.5 kg
C) 85 kg
D) 90 kg
E) NOne
Sol.   Total weight increased   = (8 × 2.5) kg   = 20 kg.   Weight of new person   = (65 + 20)= 
<gadget id="calculator">(65 + 20)</gadget>
<output>85</output>
85 kg.   Answer 85 kg
<result>C</result>
The average weight of 8 persons increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?