general math MCQ #2221

The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 kg and of girls is 40 kg. How many boys are in the class?

general math MCQ #2221

  1. Question 1

    Q1. The mean weight of 100 students in a class is 46 kg. The mean weight of boys is 50 kg and of girls is 40 kg. How many boys are in the class?

    • A) 50
    • B) 60
    • C) 65
    • D) None of these

    Answer: 60

    Explanation: The correct value is 60. Apply the formula or arithmetic step shown in the question and