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    Question

    Average weight of 5 students in a class increases by 4

    kg when weight of teacher is also included. If sum of average weight of 5 students and weight of teacher is 104 kg. Find the weight of teacher?
    A 64 Correct Answer Incorrect Answer
    B 60 Correct Answer Incorrect Answer
    C 63 Correct Answer Incorrect Answer
    D 65 Correct Answer Incorrect Answer
    E 59 Correct Answer Incorrect Answer

    Solution

    Let the average weight of class be x. and weight of teacher be t. so, Total weight of 5 students = 5x Now, average weight is also included then, (5x + t)/6 = x + 4 5x + t = 6x + 24 t – x = 24 t = x + 24------(i) AQT, x + t = 104 2t – 24 = 104 t = 64

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