The average weight of Ashish, Kiran and Mahesh is 46 kg. If the average weight of Ashish and Kiran be 40 kg and that of Kiran and Mahesh be 43 kg, then the weight of Kiran (in kg) is:
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Correct answer: C
Explanation
The correct answer is option 3 i.e. 28.
Let weights be A, K, M.
Given:
(A + K + M) / 3 = 46 → A + K + M = 138
(A + K) / 2 = 40 → A + K = 80
(K + M) / 2 = 43 → K + M = 86
From A + K + M = 138, substitute A + K = 80:
80 + M = 138 → M = 58
From K + M = 86, substitute M = 58:
K + 58 = 86 → K = 28