The average weight of 19 students is 15kg. by the admission of a new student the average weight is reduced to 14.7 kg. the weight of the new student is ?  Choose the correct choice from the following choices
A) 10.6 kg  B) 10.8 kg  C) 11 kg  D) 14.9 kg  E) None
Answer   Weight of new student = Total weight of all 20 students - Total weight of initial 19 students   = (20 x 14.7 - 19 x 15) kg   = 9 kg.   Correct Option: None
<result>E</result>
The average weight of 19 students is 15kg. by the admission of a new student the average weight is reduced to 14.7 kg. the weight of the new student is ?