The average weight of A, B and C is 45 kg.
The average weight of A, B and C is 45 kg. If the average weight of A and B be 40 kg and that of B and C be 44 kg, then the weight of B is:
Answer/Solution
33 kg
Steps/Work
Explanation:
Let A, B, C represent their respective weights. Then, we have:
A + B + C = (45 x 3) = 135 …. (i)
A + B = (40 x 2) = 80 …. (ii)
B + C = (44 x 2) = 88 ….(iii)
Adding (ii) and (iii), we get: A + 2B + C = 168 …. (iv)
Subtracting (i) from (iv), we get : B = 33.
B’s weight = 33 kg.
Answer: C
Let A, B, C represent their respective weights. Then, we have:
A + B + C = (45 x 3) = 135 …. (i)
A + B = (40 x 2) = 80 …. (ii)
B + C = (44 x 2) = 88 ….(iii)
Adding (ii) and (iii), we get: A + 2B + C = 168 …. (iv)
Subtracting (i) from (iv), we get : B = 33.
B’s weight = 33 kg.
Answer: C