the number ofboy and girls in a class are in the ratio 7:5 four years later the sum of their ages will be 56 years what are their

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1. Answer:28
   

   
   

   STEP BY STEP EXPLAINATION:

   Let the number be 5x and 7x.
   

   So,
   

   5x + 4 + 7x + 4 = 56
   

   12x + 8 = 56
   

   12x = 56 – 8
   

   12x = 48
   

   X = 48/12
   

   X = 4
   

   So, 5x = 4 * 5 = 20
   

   7x = 4 * 7 = 28
   

   
   

   Hope it helps…!!

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