arunis twice as old as Aman. after three year sum of their ages will be 21 year then find arun age.


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1 thought on “arunis twice as old as Aman. after three year sum of their ages will be 21 year then find arun age.<br /><br /><br />​”

1. let , amans age = x

   so aruns age = 2x

   therefore

   x+2x= 21

   3x= 21

   x= 21/3

   x= 7

   so aruns age = 7×2= 21 years

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