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    Question

    The average weight of 6 employees in an office increases

    by 3 kg when the boss is included. The sum of the average weight of the 6 employees and the boss's weight is 141 kg. Find the boss's weight.. 
    A 74 kg Correct Answer Incorrect Answer
    B 76 kg Correct Answer Incorrect Answer
    C 78 kg Correct Answer Incorrect Answer
    D 81 kg Correct Answer Incorrect Answer
    E None Correct Answer Incorrect Answer

    Solution

    Let the average weight of 6 employees = x kg Total weight of 6 employees = 6x kg When boss is included then total weight of 7 members = 7×(x+3) = 7x+21 Weight of boss = 7x+21-6x = x+21 According to question- x+x+21 = 141 2x = 120 X = 60 Weight of boss = x+21 = 81 kg

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