The average weight of A, B and C is 46 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is:
Choose the correct choice from the following choices:
A) 17 kg  B) 20 kg  C) 26 kg  D) 31 kg  E) 22 kg
let d sum of a, b, c is 3*46=144   and sum of a and b s 2*40= 
<gadget id="calculator">2*40</gadget>
<output>80</output>
80   sum of b and c is 3 *43=86   hence 80+86-144= 
<gadget id="calculator">80+86-144</gadget>
<output>22</output>
22   ans=22   ANSW22 kgR:22 kg
<result>E</result>
The average weight of A, B and C is 46 kg. If the average weight of A and B be 40 kg and that of B and C be 43 kg, then the weight of B is: