Among Davids classmates, there are twice as many boys as girls. Which of the following numbers may represent the number of all the children in his class?


  1. The number that could represent the number of students in class is = X + 2x

    Calculation and f the total number of students

    Let us take the number of boys to be = X
    Then the number of girls is twice that of the boys. That is, y = 2x
    Therefore the total number of students in the class z = X + 2x
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