The average weight of 10 person's increases by 2.5 kg when a new person comes in place of one of them weighing 50 kg. What might be the weight of the new person? Pick:
A) 76 kg  B) 76.5 kg  C) 75 kg  D) Data inadequate  E) None of these
Explanation:   Total weight increased = (10 x 2.5) kg = 25 kg.   Weight of new person = (50 + 25)= 
<gadget id="calculator">(50 + 25)</gadget>
<output>75</output>
75 kg.   Answer: 75 kg
<result>C</result>
The average weight of 10 person's increases by 2.5 kg when a new person comes in place of one of them weighing 50 kg. What might be the weight of the new person?