The average weight of 8 person's increases by 4 kg when a new person comes in place of one of them weighing 55 kg. What might be the weight of the new person? Answers.
A) 80 kg
B) 87 kg
C) 90 kg
D) 100 kg
E) 110 kg
Total weight increased = (8 x 4) kg = 32 kg.   Weight of new person = (55 + 32)= 
<gadget id="calculator">(55 + 32)</gadget>
<output>87</output>
87 kg.   87 kg)
<result>B</result>
The average weight of 8 person's increases by 4 kg when a new person comes in place of one of them weighing 55 kg. What might be the weight of the new person?