Question
The average weight of a group of five persons, A, B, C,
D, and E is 55 kg. If another person K joins the group then the average weight of the group is decreased by 4 kg, then find the weight of K.Solution
Total weight of A, B, C, D, and E together = 55 × 5 = 275 kg Weight of K = 51 × 6 – 275 = 306 – 275 = 31 kg
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