The average weight of 7 persons increases by 1.5 kg. If a person weighing 65 kg is replaced by a new person, what could be the weight of the new person? Choose one.
A) 76 kg  B) 77 kg  C) 75.5 kg  D) Data inadequate  E) None of these
total weight increases = 7 × 1.5 = 10.5 kg   so the weight of new person = 65 + 10.5= 
<gadget id="calculator">65 + 10.5</gadget>
<output>75.5</output>
75.5 kg   Answer 75.5 kg
<result>C</result>
The average weight of 7 persons increases by 1.5 kg. If a person weighing 65 kg is replaced by a new person, what could be the weight of the new person?