The average weight of A, B and C is 45 kg. if the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is
(a)17 kg (b)20 kg (c)26 kg (d)31 kg
Question ID - 50840 | SaraNextGen Top Answer The average weight of A, B and C is 45 kg. if the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is
(a)17 kg (b)20 kg (c)26 kg (d)31 kg
The average weight of A, B and C is 45 kg. if the average weight of A and B is 40 kg and that of B and C is 43 kg, then the weight of B is
(a)17 kg (b)20 kg (c)26 kg (d)31 kg
1 Answer
127 votes
Answer Key / Explanation : (d) -
Let 
represent their respective weights. Then, we have:
Adding 
, we get 
Subtracting 
from 
we get 
B’s weight = 31 kg.
127 votes
Answer Link
127