Respuesta :

linandrew41

Let's set up some variables:

  • b: # of boys
  • g: # of girls

Let's set up some equations based on the informative given:

  • boys to girls ratio ⇒ 1: 12

             (Mathematical form) g = 12b

  • 77 more girls than boys

             (Mathematical form) g = b + 77

Let's put the equation together:

 g = 12b         -- equation 1

 g = b + 77     -- equation 2

  (equation 2)'s value of g into (equation 1)

  12b = b + 77

   11b = 77

    b = 7

There are 7 boys.

Answer: 7 boys

Hope that helps!

#LearnwithBrainly

 

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