"the average weight of a, b and c is 48 kg. if the average weight of a and b be 45 kg and that of band c be 50 kg. find the weight of b"
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SOLUTION:--
Let A, B, C represent their respective weights. Then, we have:
A + B + C = (48 x 3) = 144 .... (i)
A + B = (45 x 2) = 90 .... (ii)
B + C = (50 x 2) = 100....(iii)
Adding (ii) and (iii), we get: A + 2B + C = 190 .... (iv)
Subtracting (i) from (iv), we get : B = 46
Therefore B's weight = 46kg.
SOLUTION:--
Let A, B, C represent their respective weights. Then, we have:
A + B + C = (48 x 3) = 144 .... (i)
A + B = (45 x 2) = 90 .... (ii)
B + C = (50 x 2) = 100....(iii)
Adding (ii) and (iii), we get: A + 2B + C = 190 .... (iv)
Subtracting (i) from (iv), we get : B = 46
Therefore B's weight = 46kg.
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