A class has 35 boys and girls. There are 7 more girls than boys. Find the number of girls and boys i

Discussion in 'Calculator Requests' started by math_celebrity, Sep 2, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    A class has 35 boys and girls. There are 7 more girls than boys. Find the number of girls and boys in the class

    Let the number of boys be b and the number of girls be g. We're given two equations:
    1. b + g = 35
    2. g = b + 7 (7 more girls means we add 7 to the boys)
    To solve for b, we substitute equation (2) into equation (1) for g:
    b + b + 7 = 35

    To solve for b, we type this equation into our search engine and we get:
    b = 14

    Now, to solve for g, we plug b = 14 into equation (2) above:
    g = 14 + 7
    g = 21
     

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