The average weight of 6 person's 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:  A) 76 kg  B) 80 kg  C) 85 kg  D) Data inadequate  E) None of these
Explanation:   Total weight increased = (6 x 2.5) kg = 15 kg.   Weight of new person = (65 + 15)= 
<gadget id="calculator">(65 + 15)</gadget>
<output>80</output>
80 kg.   Answer: 80 kg
<result>B</result>
The average weight of 6 person's 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?