'$X$' is twice as old as '$Y$' $3$ years ago, when '$X$' was as old as '$Y$' today. If the difference between their ages at present is $3$ years, how old is '$X$' at present?
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'$X$' is twice as old as '$Y$' $3$ years ago, when '$X$' was as old as '$Y$' today. If the difference between their ages at present is $3$ years, how old is '$X$' at present?