The average weight of 6 person's increases by 1.8 kg when a new person comes in place of one of them weighing 69 kg. What might be the weight of the new person?  Answers:
A) 73 kg
B) 79.8 kg
C) 86 kg
D) Data inadequate
E) None of these
Total weight increased = (6 x 1.8) kg = 10.8 kg.   Weight of new person = (69 + 10.8)= 
<gadget id="calculator">(69 + 10.8)</gadget>
<output>79.8</output>
79.8 kg.   Answer: Option 79.8 kg
<result>B</result>
The average weight of 6 person's increases by 1.8 kg when a new person comes in place of one of them weighing 69 kg. What might be the weight of the new person?