<PRE><B>Question 921973</B>
let x be the no of adults int the family
let y  be the no of children in the family
   family has equal number of adults and children
    so , x=y
fee  per adult  = 50
  total fee for x no of adult  = 50* x
 fee per children  = 25 
 total fee for y no of children  = 25* y
   Jun pays 225 for the entrance fee of his family
  so , 50 x+25y= 225
      but x=y
 50 x+25 x= 225
       75 x =225 
divide with 75 on both sides
   75 x/75 = 225/75
       x =3 
no of adults (x)= 3
 no of children  (y)= 3
 total members in the family (x+y)= 3+3 = 6
  result is 6 .
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