The average weight of 20 girls increases by 2 kg when a new girl comes in place of one of them weighing 40 kg. What might be the weight of the new girl?  Choose the correct choice from the following
A) 85 kg B) 90 kg C) 80 kg D) 75 kg E) 70 kg
Total weight increased = 20 x 2 kg = 40 kg.   Weight of new person = 40 + 40= 
<gadget id="calculator">40 + 40</gadget>
<output>80</output>
80 kg   Answer : 80 kg
<result>C</result>
The average weight of 20 girls increases by 2 kg when a new girl comes in place of one of them weighing 40 kg. What might be the weight of the new girl?