Question 8748
   Let the age of Rugem now be = x
   So the age of Jerome now be = 4x   .......   4 times the age of Rugem

   After 10 years, the ages of

   Rugem will be = x + 10
   Jerome will be = 2(x + 10)   ..........Twice the age of Rugem

   As per the first equation, 
   the age of Jerome is = 4x +10

   So, 2(x +10)  =  4x + 10
   =  2x + 20 = 4x + 10
   =  20 - 10 = 4x - 2x
   =  2x = 10
   =   x = 10/2 = 5

   So the present age of Regem = 5  and          
   the present age of Jerome = 5*4 = 20 years  Answer


   I hope this is clear to you.  In such problems, randomly you can verify   
   the present and the age after 10 years applying the values found out.



   GSM