Hi

25 students in Ms sally class 

Let x and (25-x) represent th enumber of girls and boys respectively

Question states***

   |Cross Multiplying 

  2x = 3(25-x)

   5x = 75

    x = 15, number of girsls.  There are 10 boys



CHECKING our Answer***

   10/15 = 2/3 

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