The average weight of 29 students is 28 kg. By the admission of a new student, the average weight is reduced to 27.1 kg. The weight of the new student is Choose the correct choice.
A) 22 kg  B) 1 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* 27.1   Weight of the new student = ( 30*27.1 – 29*28)   = 813 - 812= 
<gadget id="calculator">813 - 812</gadget>
<output>1</output>
1   Answer:1 kg
<result>B</result>
The average weight of 29 students is 28 kg. By the admission of a new student, the average weight is reduced to 27.1 kg. The weight of the new student is