The average weight of 29 students is 28 kg. By the admission of a new student, the average weight is reduced to 27.8 kg. The weight of the new student is  Choose the most appropriate option:
A) 22 kg
B) 21.6 kg
C) 22.4 kg
D) 21 kg
E) None of these
Exp . The total weight of 29 students = 29* 28   The total weight of 30 students = 30* 27.8   Weight of the new student = ( 30*27.8 – 29*28)   = 834 - 812= 
<gadget id="calculator">834 - 812</gadget>
<output>22</output>
22   22 kgnswer:22 kg
<result>A</result>
The average weight of 29 students is 28 kg. By the admission of a new student, the average weight is reduced to 27.8 kg. The weight of the new student is